Csharp/C Sharp by API/System.Windows.Forms/ListBox — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
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(нет различий)
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Текущая версия на 12:09, 26 мая 2010
Содержание
- 1 ListBox.BeginUpdate()
- 2 ListBox.ContextMenu
- 3 ListBox.DataBindings
- 4 ListBox.DataSource
- 5 ListBox.DataSourceChanged
- 6 ListBox.DisplayMember
- 7 ListBox.DisplayMemberChanged
- 8 ListBox.EndUpdate()
- 9 ListBox.FindString
- 10 ListBox.Items
- 11 ListBox.Items.Add
- 12 ListBox.Items.AddRange
- 13 ListBox.Items.Clear()
- 14 ListBox.Items.RemoveAt
- 15 ListBox.ScrollAlwaysVisible
- 16 ListBox.SelectedIndex
- 17 ListBox.SelectedIndexChanged
- 18 ListBox.SelectedValueChanged
- 19 ListBox.SelectionMode
- 20 ListBox.TopIndex
- 21 ListBox.ValueMemberChanged
ListBox.BeginUpdate()
using System;
using System.Drawing;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
public class ListBoxItemAdd : Form{
ListBox lb;
public ListBoxItemAdd()
{
Size = new Size(300,400);
lb = new ListBox();
lb.Parent = this;
lb.Location = new Point(10,10);
lb.Size = new Size(ClientSize.Width - 20, Height - 200);
lb.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Bottom;
lb.BorderStyle = BorderStyle.Fixed3D;
lb.BeginUpdate();
for (int i = 0; i < 5; i++)
{
lb.Items.Add(i);
}
lb.Items.Add("12345");
lb.Items.Add("67890");
lb.EndUpdate();
}
static void Main()
{
Application.Run(new ListBoxItemAdd());
}
}
ListBox.ContextMenu
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class ListBoxContextMenu : System.Windows.Forms.Form
{
private System.Windows.Forms.Button btnDone;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Button btnAdd;
private System.Windows.Forms.ListBox listBox1;
private System.Windows.Forms.ContextMenu contextMenu1;
private System.Windows.Forms.MenuItem menuItem1;
private System.Windows.Forms.MenuItem menuItem2;
private System.Windows.Forms.MenuItem menuItem3;
private System.Windows.Forms.MenuItem menuItem4;
private System.ruponentModel.Container components = null;
public ListBoxContextMenu()
{
InitializeComponent();
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
private void InitializeComponent()
{
this.btnDone = new System.Windows.Forms.Button();
this.textBox1 = new System.Windows.Forms.TextBox();
this.btnAdd = new System.Windows.Forms.Button();
this.listBox1 = new System.Windows.Forms.ListBox();
this.contextMenu1 = new System.Windows.Forms.ContextMenu();
this.menuItem1 = new System.Windows.Forms.MenuItem();
this.menuItem2 = new System.Windows.Forms.MenuItem();
this.menuItem3 = new System.Windows.Forms.MenuItem();
this.menuItem4 = new System.Windows.Forms.MenuItem();
this.SuspendLayout();
//
// btnDone
//
this.btnDone.Location = new System.Drawing.Point(208, 16);
this.btnDone.Name = "btnDone";
this.btnDone.TabIndex = 3;
this.btnDone.Text = "Done";
this.btnDone.Click += new System.EventHandler(this.btnDone_Click);
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(16, 88);
this.textBox1.Name = "textBox1";
this.textBox1.TabIndex = 5;
this.textBox1.Text = "";
//
// btnAdd
//
this.btnAdd.Location = new System.Drawing.Point(16, 120);
this.btnAdd.Name = "btnAdd";
this.btnAdd.TabIndex = 6;
this.btnAdd.Text = "Add";
this.btnAdd.Click += new System.EventHandler(this.btnAdd_Click);
//
// listBox1
//
this.listBox1.ContextMenu = this.contextMenu1;
this.listBox1.Location = new System.Drawing.Point(16, 8);
this.listBox1.Name = "listBox1";
this.listBox1.Size = new System.Drawing.Size(120, 69);
this.listBox1.TabIndex = 7;
//
// contextMenu1
//
this.contextMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.menuItem1,
this.menuItem2,
this.menuItem3,
this.menuItem4});
//
// menuItem1
//
this.menuItem1.Index = 0;
this.menuItem1.Text = "Move Down";
this.menuItem1.Click += new System.EventHandler(this.ctxtMenuClick);
//
// menuItem2
//
this.menuItem2.Index = 1;
this.menuItem2.Text = "Move up";
this.menuItem2.Click += new System.EventHandler(this.ctxtMenuClick);
//
// menuItem3
//
this.menuItem3.Index = 2;
this.menuItem3.Text = "Delete";
this.menuItem3.Click += new System.EventHandler(this.ctxtMenuClick);
//
// menuItem4
//
this.menuItem4.Index = 3;
this.menuItem4.Text = "Duplicate";
this.menuItem4.Click += new System.EventHandler(this.ctxtMenuClick);
//
// ListBoxContextMenu
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 266);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.listBox1,
this.btnAdd,
this.textBox1,
this.btnDone});
this.Name = "ListBoxContextMenu";
this.ResumeLayout(false);
}
#endregion
[STAThread]
static void Main()
{
Application.Run(new ListBoxContextMenu());
}
private void btnDone_Click(object sender, System.EventArgs e)
{
Application.Exit();
}
private void btnAdd_Click(object sender, System.EventArgs e)
{
listBox1.Items.Add(textBox1.Text);
textBox1.Text = "";
}
private void ctxtMenuClick(object sender, System.EventArgs e)
{
if ( listBox1.SelectedIndex != -1 )
{
MenuItem mi = (MenuItem) sender;
MessageBox.Show(mi.Text + " on " + listBox1.SelectedItem,"Context Menu", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
}else{
MessageBox.Show("Please select an item","Context Menu Tester", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
}
}
}
ListBox.DataBindings
/*
User Interfaces in C#: Windows Forms and Custom Controls
by Matthew MacDonald
Publisher: Apress
ISBN: 1590590457
*/
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
namespace DataBinding101
{
/// <summary>
/// Summary description for SingleItemDataBinding.
/// </summary>
public class SingleItemDataBinding : System.Windows.Forms.Form
{
internal System.Windows.Forms.ListBox lstCity;
internal System.Windows.Forms.TextBox txtCity;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ruponentModel.Container components = null;
public SingleItemDataBinding()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if(components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.lstCity = new System.Windows.Forms.ListBox();
this.txtCity = new System.Windows.Forms.TextBox();
this.SuspendLayout();
//
// lstCity
//
this.lstCity.Anchor = (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right);
this.lstCity.IntegralHeight = false;
this.lstCity.Location = new System.Drawing.Point(12, 40);
this.lstCity.Name = "lstCity";
this.lstCity.Size = new System.Drawing.Size(224, 148);
this.lstCity.TabIndex = 3;
//
// txtCity
//
this.txtCity.Anchor = ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right);
this.txtCity.Location = new System.Drawing.Point(12, 12);
this.txtCity.Name = "txtCity";
this.txtCity.Size = new System.Drawing.Size(224, 21);
this.txtCity.TabIndex = 2;
this.txtCity.Text = "";
//
// SingleItemDataBinding
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 14);
this.ClientSize = new System.Drawing.Size(248, 202);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.lstCity,
this.txtCity});
this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.Name = "SingleItemDataBinding";
this.Text = "SingleItemDataBinding";
this.Load += new System.EventHandler(this.SingleItemDataBinding_Load);
this.ResumeLayout(false);
}
#endregion
private void SingleItemDataBinding_Load(object sender, System.EventArgs e)
{
string[] cityChoices = {"Seattle", "New York", "Tokyo", "Montreal"};
lstCity.DataSource = cityChoices;
txtCity.DataBindings.Add("Text", cityChoices, "");
}
[STAThread]
static void Main()
{
Application.Run(new SingleItemDataBinding());
}
}
}
ListBox.DataSource
/*
User Interfaces in C#: Windows Forms and Custom Controls
by Matthew MacDonald
Publisher: Apress
ISBN: 1590590457
*/
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Drawing.Text;
namespace DataBinding101
{
public class BindingUnusualProperties : System.Windows.Forms.Form
{
internal System.Windows.Forms.Label Label2;
internal System.Windows.Forms.Label Label1;
internal System.Windows.Forms.ListBox lstFonts;
internal System.Windows.Forms.Label lblSampleText;
internal System.Windows.Forms.ListBox lstColors;
public BindingUnusualProperties()
{
this.Label2 = new System.Windows.Forms.Label();
this.Label1 = new System.Windows.Forms.Label();
this.lstFonts = new System.Windows.Forms.ListBox();
this.lblSampleText = new System.Windows.Forms.Label();
this.lstColors = new System.Windows.Forms.ListBox();
this.SuspendLayout();
this.Label2.Location = new System.Drawing.Point(210, 13);
this.Label2.Size = new System.Drawing.Size(140, 12);
this.Label2.Text = "Choose a Font:";
this.Label1.Location = new System.Drawing.Point(14, 13);
this.Label1.Size = new System.Drawing.Size(140, 12);
this.Label1.Text = "Choose a Color:";
this.lstFonts.Location = new System.Drawing.Point(210, 29);
this.lstFonts.Size = new System.Drawing.Size(180, 134);
this.lblSampleText.Anchor = (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right);
this.lblSampleText.Location = new System.Drawing.Point(18, 185);
this.lblSampleText.Name = "lblSampleText";
this.lblSampleText.Size = new System.Drawing.Size(372, 96);
this.lblSampleText.TabIndex = 6;
this.lblSampleText.Text = "Click an item in one of the lists above to change the font or color of this text." +
" Once the initial conditions are set up (i.e., the binding), this operation happ" +
"ens automatically.";
this.lstColors.Location = new System.Drawing.Point(14, 29);
this.lstColors.Size = new System.Drawing.Size(176, 134);
this.AutoScaleBaseSize = new System.Drawing.Size(5, 14);
this.ClientSize = new System.Drawing.Size(404, 294);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.Label2,
this.Label1,
this.lstFonts,
this.lblSampleText,
this.lstColors});
this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.Name = "BindingUnusualProperties";
this.Text = "Binding Unusual Properties";
this.Load += new System.EventHandler(this.BindingUnusualProperties_Load);
this.ResumeLayout(false);
}
private void BindingUnusualProperties_Load(object sender, System.EventArgs e)
{
ArrayList fontObjList = new ArrayList();
ArrayList colorObjList = new ArrayList();
InstalledFontCollection InstalledFonts = new InstalledFontCollection();
foreach (FontFamily family in InstalledFonts.Families)
{
try
{
fontObjList.Add(new Font(family, 12));
}
catch
{
}
}
string[] colorNames;
colorNames = System.Enum.GetNames(typeof(KnownColor));
TypeConverter cnvrt = TypeDescriptor.GetConverter(typeof(KnownColor));
foreach (string colorName in colorNames)
{
colorObjList.Add(Color.FromKnownColor((KnownColor)cnvrt.ConvertFromString(colorName)));
}
// We can now bind both our list controls.
lstColors.DataSource = colorObjList;
lstColors.DisplayMember = "Name";
lstFonts.DataSource = fontObjList;
lstFonts.DisplayMember = "Name";
// The label is bound to both data sources.
lblSampleText.DataBindings.Add("ForeColor", colorObjList, "");
lblSampleText.DataBindings.Add("Font", fontObjList, "");
}
[STAThread]
static void Main()
{
Application.Run(new BindingUnusualProperties());
}
}
}
ListBox.DataSourceChanged
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
public class Employee{
public string ID;
public string Name ;
public Employee(string strName, string strID)
{
this.ID = strID;
this.Name = strName;
}
public override string ToString()
{
return this.ID + " : " + this.Name;
}
}
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.RadioButton rbAuthors;
private System.Windows.Forms.RadioButton rbEmployees;
private System.Windows.Forms.ListBox lb;
private DataTable dataTable;
private ArrayList Employees = new ArrayList();
private System.ruponentModel.Container components = null;
public Form1()
{
InitializeComponent();
lb.Items.Add("A");
lb.Items.Add("B");
lb.Items.Add("C");
lb.Items.Add("D");
lb.Items.Add("E");
lb.SelectedIndex = 0;
// populate the arraylist for later use.
Employees.Add(new Employee("A", "1"));
Employees.Add(new Employee("B", "2"));
Employees.Add(new Employee("C", "3"));
Employees.Add(new Employee("D", "4"));
Employees.Add(new Employee("E", "5"));
Employees.Add(new Employee("F", "6"));
Employees.Add(new Employee("G", "7"));
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
private void InitializeComponent()
{
this.lb = new System.Windows.Forms.ListBox();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.rbEmployees = new System.Windows.Forms.RadioButton();
this.rbAuthors = new System.Windows.Forms.RadioButton();
this.groupBox1.SuspendLayout();
this.SuspendLayout();
//
// lb
//
this.lb.Location = new System.Drawing.Point(16, 8);
this.lb.Name = "lb";
this.lb.Size = new System.Drawing.Size(232, 212);
this.lb.TabIndex = 0;
this.lb.DisplayMemberChanged += new System.EventHandler(this.lb_DisplayMemberChanged);
this.lb.ValueMemberChanged += new System.EventHandler(this.lb_ValueMemberChanged);
this.lb.DataSourceChanged += new System.EventHandler(this.lb_DataSourceChanged);
this.lb.SelectedValueChanged += new System.EventHandler(this.lb_SelectedValueChanged);
this.lb.SelectedIndexChanged += new System.EventHandler(this.lb_SelectedIndexChanged);
//
// groupBox1
//
this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
this.rbEmployees,
this.rbAuthors});
this.groupBox1.Location = new System.Drawing.Point(16, 240);
this.groupBox1.Name = "groupBox1";
this.groupBox1.TabIndex = 1;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "DataSource";
//
// rbEmployees
//
this.rbEmployees.Location = new System.Drawing.Point(24, 56);
this.rbEmployees.Name = "rbEmployees";
this.rbEmployees.TabIndex = 1;
this.rbEmployees.Text = "Employee\"s";
this.rbEmployees.CheckedChanged += new System.EventHandler(this.rb_CheckedChanged);
//
// rbAuthors
//
this.rbAuthors.Checked = true;
this.rbAuthors.Location = new System.Drawing.Point(24, 32);
this.rbAuthors.Name = "rbAuthors";
this.rbAuthors.TabIndex = 0;
this.rbAuthors.TabStop = true;
this.rbAuthors.Text = "Authors";
this.rbAuthors.CheckedChanged += new System.EventHandler(this.rb_CheckedChanged);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(264, 389);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.groupBox1,
this.lb});
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
this.groupBox1.ResumeLayout(false);
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void rb_CheckedChanged(object sender, System.EventArgs e)
{
lb.DataSource = Employees;
lb.DisplayMember = "Name";
lb.ValueMember = "ID";
}
private void lb_SelectedIndexChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.SelectedIndex.ToString()+ "\n" + lb.GetItemText(lb.SelectedItem),"lb_SelectedIndexChanged");
}
private void lb_SelectedValueChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.GetItemText(lb.SelectedItem),"lb_SelectedValueChanged");
}
private void lb_DataSourceChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.DataSource.ToString(), "lb_DataSourceChanged");
}
private void lb_DisplayMemberChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.DisplayMember.ToString(), "lb_DisplayMemberChanged");
}
private void lb_ValueMemberChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.ValueMember.ToString(), "lb_ValueMemberChanged");
}
private void Form1_Load(object sender, System.EventArgs e)
{
this.lb.SelectedValueChanged += new System.EventHandler(this.lb_SelectedValueChanged);
this.lb.SelectedIndexChanged += new System.EventHandler(this.lb_SelectedIndexChanged);
}
}
ListBox.DisplayMember
/*
User Interfaces in C#: Windows Forms and Custom Controls
by Matthew MacDonald
Publisher: Apress
ISBN: 1590590457
*/
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
namespace DataBinding101
{
/// <summary>
/// Summary description for ObjectListBinding.
/// </summary>
public class ObjectListBinding : System.Windows.Forms.Form
{
internal System.Windows.Forms.ListBox lstCity;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ruponentModel.Container components = null;
public ObjectListBinding()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if(components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.lstCity = new System.Windows.Forms.ListBox();
this.SuspendLayout();
//
// lstCity
//
this.lstCity.Anchor = (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right);
this.lstCity.IntegralHeight = false;
this.lstCity.Location = new System.Drawing.Point(4, 4);
this.lstCity.Name = "lstCity";
this.lstCity.Size = new System.Drawing.Size(252, 216);
this.lstCity.TabIndex = 2;
this.lstCity.DoubleClick += new System.EventHandler(this.lstCity_DoubleClick);
//
// ObjectListBinding
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 14);
this.ClientSize = new System.Drawing.Size(268, 230);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.lstCity});
this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.Name = "ObjectListBinding";
this.Text = "ObjectListBinding";
this.Load += new System.EventHandler(this.ObjectListBinding_Load);
this.ResumeLayout(false);
}
#endregion
private void ObjectListBinding_Load(object sender, System.EventArgs e)
{
City[] cityChoices = {new City("Seattle", "U.S.A."),
new City("New York", "U.S.A."), new City("Tokyo", "Japan"),
new City("Montreal", "Canada")};
lstCity.DataSource = cityChoices;
lstCity.DisplayMember = "Name";
}
private void lstCity_DoubleClick(object sender, System.EventArgs e)
{
MessageBox.Show(((City)lstCity.SelectedItem).Country);
}
[STAThread]
static void Main()
{
Application.Run(new ObjectListBinding());
}
}
public class City
{
private string name;
private string country;
public string Name
{
get
{
return name;
}
set
{
name = value;
}
}
public string Country
{
get
{
return country;
}
set
{
country = value;
}
}
public City(string name, string country)
{
this.Name = name;
this.Country = country;
}
}
}
ListBox.DisplayMemberChanged
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
public class Employee{
public string ID;
public string Name ;
public Employee(string strName, string strID)
{
this.ID = strID;
this.Name = strName;
}
public override string ToString()
{
return this.ID + " : " + this.Name;
}
}
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.RadioButton rbAuthors;
private System.Windows.Forms.RadioButton rbEmployees;
private System.Windows.Forms.ListBox lb;
private DataTable dataTable;
private ArrayList Employees = new ArrayList();
private System.ruponentModel.Container components = null;
public Form1()
{
InitializeComponent();
lb.Items.Add("A");
lb.Items.Add("B");
lb.Items.Add("C");
lb.Items.Add("D");
lb.Items.Add("E");
lb.SelectedIndex = 0;
// populate the arraylist for later use.
Employees.Add(new Employee("A", "1"));
Employees.Add(new Employee("B", "2"));
Employees.Add(new Employee("C", "3"));
Employees.Add(new Employee("D", "4"));
Employees.Add(new Employee("E", "5"));
Employees.Add(new Employee("F", "6"));
Employees.Add(new Employee("G", "7"));
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
private void InitializeComponent()
{
this.lb = new System.Windows.Forms.ListBox();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.rbEmployees = new System.Windows.Forms.RadioButton();
this.rbAuthors = new System.Windows.Forms.RadioButton();
this.groupBox1.SuspendLayout();
this.SuspendLayout();
//
// lb
//
this.lb.Location = new System.Drawing.Point(16, 8);
this.lb.Name = "lb";
this.lb.Size = new System.Drawing.Size(232, 212);
this.lb.TabIndex = 0;
this.lb.DisplayMemberChanged += new System.EventHandler(this.lb_DisplayMemberChanged);
this.lb.ValueMemberChanged += new System.EventHandler(this.lb_ValueMemberChanged);
this.lb.DataSourceChanged += new System.EventHandler(this.lb_DataSourceChanged);
this.lb.SelectedValueChanged += new System.EventHandler(this.lb_SelectedValueChanged);
this.lb.SelectedIndexChanged += new System.EventHandler(this.lb_SelectedIndexChanged);
//
// groupBox1
//
this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
this.rbEmployees,
this.rbAuthors});
this.groupBox1.Location = new System.Drawing.Point(16, 240);
this.groupBox1.Name = "groupBox1";
this.groupBox1.TabIndex = 1;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "DataSource";
//
// rbEmployees
//
this.rbEmployees.Location = new System.Drawing.Point(24, 56);
this.rbEmployees.Name = "rbEmployees";
this.rbEmployees.TabIndex = 1;
this.rbEmployees.Text = "Employee\"s";
this.rbEmployees.CheckedChanged += new System.EventHandler(this.rb_CheckedChanged);
//
// rbAuthors
//
this.rbAuthors.Checked = true;
this.rbAuthors.Location = new System.Drawing.Point(24, 32);
this.rbAuthors.Name = "rbAuthors";
this.rbAuthors.TabIndex = 0;
this.rbAuthors.TabStop = true;
this.rbAuthors.Text = "Authors";
this.rbAuthors.CheckedChanged += new System.EventHandler(this.rb_CheckedChanged);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(264, 389);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.groupBox1,
this.lb});
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
this.groupBox1.ResumeLayout(false);
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void rb_CheckedChanged(object sender, System.EventArgs e)
{
lb.DataSource = Employees;
lb.DisplayMember = "Name";
lb.ValueMember = "ID";
}
private void lb_SelectedIndexChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.SelectedIndex.ToString()+ "\n" + lb.GetItemText(lb.SelectedItem),"lb_SelectedIndexChanged");
}
private void lb_SelectedValueChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.GetItemText(lb.SelectedItem),"lb_SelectedValueChanged");
}
private void lb_DataSourceChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.DataSource.ToString(), "lb_DataSourceChanged");
}
private void lb_DisplayMemberChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.DisplayMember.ToString(), "lb_DisplayMemberChanged");
}
private void lb_ValueMemberChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.ValueMember.ToString(), "lb_ValueMemberChanged");
}
private void Form1_Load(object sender, System.EventArgs e)
{
this.lb.SelectedValueChanged += new System.EventHandler(this.lb_SelectedValueChanged);
this.lb.SelectedIndexChanged += new System.EventHandler(this.lb_SelectedIndexChanged);
}
}
ListBox.EndUpdate()
using System;
using System.Drawing;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
public class ListBoxItemAddRange : Form{
ListBox lb;
public ListBoxItemAddRange()
{
Size = new Size(300,400);
lb = new ListBox();
lb.Parent = this;
lb.Location = new Point(10,10);
lb.Size = new Size(ClientSize.Width - 20, Height - 200);
lb.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Bottom;
lb.BorderStyle = BorderStyle.Fixed3D;
lb.BeginUpdate();
string[] arNames = new string[5];
for(int i = 0;i<5;i++){
arNames[i] = "I";
}
lb.Items.AddRange(arNames);
lb.Items.Add("12345");
lb.Items.Add("67890");
lb.EndUpdate();
}
static void Main()
{
Application.Run(new ListBoxItemAddRange());
}
}
ListBox.FindString
/*
C# Programming Tips & Techniques
by Charles Wright, Kris Jamsa
Publisher: Osborne/McGraw-Hill (December 28, 2001)
ISBN: 0072193794
*/
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
namespace AddControls
{
/// <summary>
/// Summary description for AddControls.
/// </summary>
public class AddControls : System.Windows.Forms.Form
{
private System.Windows.Forms.ListBox listBox1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Button button2;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ruponentModel.Container components = null;
public AddControls()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.button2 = new System.Windows.Forms.Button();
this.textBox1 = new System.Windows.Forms.TextBox();
this.button1 = new System.Windows.Forms.Button();
this.listBox1 = new System.Windows.Forms.ListBox();
this.SuspendLayout();
//
// button2
//
this.button2.Location = new System.Drawing.Point(160, 240);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(96, 24);
this.button2.TabIndex = 3;
this.button2.Text = "Cancel";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(38, 200);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(216, 20);
this.textBox1.TabIndex = 1;
this.textBox1.Text = "";
//
// button1
//
this.button1.Location = new System.Drawing.Point(48, 240);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(80, 24);
this.button1.TabIndex = 2;
this.button1.Text = "Add Item";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// listBox1
//
this.listBox1.Location = new System.Drawing.Point(38, 32);
this.listBox1.Name = "listBox1";
this.listBox1.Size = new System.Drawing.Size(216, 147);
this.listBox1.TabIndex = 0;
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.button2,
this.button1,
this.textBox1,
this.listBox1});
this.Name = "AddControls";
this.Text = "AddControls";
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new AddControls());
}
private void button1_Click(object sender, System.EventArgs e)
{
if (textBox1.Text == "")
return;
string strAdd = textBox1.Text;
if (listBox1.FindString (strAdd, -1) < 0)
{
listBox1.Items.Add (strAdd);
textBox1.Text = "";
textBox1.Focus ();
return;
}
MessageBox.Show ("\"" + strAdd + "\" is already in the list box", "Duplicate");
}
private void button2_Click(object sender, System.EventArgs e)
{
Application.Exit();
}
}
}
ListBox.Items
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form
{
private System.Windows.Forms.ListBox displayListBox;
private System.Windows.Forms.TextBox inputTextBox;
private System.Windows.Forms.Button addButton;
private System.Windows.Forms.Button removeButton;
private System.Windows.Forms.Button clearButton;
public Form1() {
InitializeComponent();
}
private void addButton_Click( object sender, EventArgs e )
{
displayListBox.Items.Add( inputTextBox.Text );
inputTextBox.Clear();
}
private void removeButton_Click( object sender, EventArgs e )
{
if ( displayListBox.SelectedIndex != -1 )
displayListBox.Items.RemoveAt( displayListBox.SelectedIndex );
}
private void clearButton_Click( object sender, EventArgs e )
{
displayListBox.Items.Clear();
}
private void InitializeComponent()
{
this.displayListBox = new System.Windows.Forms.ListBox();
this.inputTextBox = new System.Windows.Forms.TextBox();
this.addButton = new System.Windows.Forms.Button();
this.removeButton = new System.Windows.Forms.Button();
this.clearButton = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// displayListBox
//
this.displayListBox.FormattingEnabled = true;
this.displayListBox.Location = new System.Drawing.Point(13, 12);
this.displayListBox.Name = "displayListBox";
this.displayListBox.Size = new System.Drawing.Size(119, 238);
this.displayListBox.TabIndex = 0;
//
// inputTextBox
//
this.inputTextBox.Location = new System.Drawing.Point(149, 12);
this.inputTextBox.Name = "inputTextBox";
this.inputTextBox.Size = new System.Drawing.Size(100, 20);
this.inputTextBox.TabIndex = 1;
//
// addButton
//
this.addButton.Location = new System.Drawing.Point(149, 56);
this.addButton.Name = "addButton";
this.addButton.Size = new System.Drawing.Size(100, 36);
this.addButton.TabIndex = 2;
this.addButton.Text = "Add";
this.addButton.Click += new System.EventHandler(this.addButton_Click);
//
// removeButton
//
this.removeButton.Location = new System.Drawing.Point(149, 109);
this.removeButton.Name = "removeButton";
this.removeButton.Size = new System.Drawing.Size(100, 36);
this.removeButton.TabIndex = 3;
this.removeButton.Text = "Remove";
this.removeButton.Click += new System.EventHandler(this.removeButton_Click);
//
// clearButton
//
this.clearButton.Location = new System.Drawing.Point(149, 165);
this.clearButton.Name = "clearButton";
this.clearButton.Size = new System.Drawing.Size(100, 36);
this.clearButton.TabIndex = 4;
this.clearButton.Text = "Clear";
this.clearButton.Click += new System.EventHandler(this.clearButton_Click);
// ListBoxTestForm
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(263, 268);
this.Controls.Add(this.clearButton);
this.Controls.Add(this.removeButton);
this.Controls.Add(this.addButton);
this.Controls.Add(this.inputTextBox);
this.Controls.Add(this.displayListBox);
this.Name = "ListBoxTestForm";
this.Text = "ListBoxTest";
this.ResumeLayout(false);
this.PerformLayout();
}
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
ListBox.Items.Add
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form
{
private System.Windows.Forms.ListBox lstCustomers;
public Form1() {
InitializeComponent();
lstCustomers.Items.Add(new Customer("A", "B", DateTime.Now.AddDays(-10)));
lstCustomers.Items.Add(new Customer("C", "D", DateTime.Now.AddDays(-100)));
lstCustomers.Items.Add(new Customer("F", "G", DateTime.Now.AddDays(-500)));
}
private void lstCustomers_SelectedIndexChanged(object sender, EventArgs e)
{
Customer cust = (Customer)lstCustomers.SelectedItem;
MessageBox.Show("Birth Date: " + cust.BirthDate.ToShortDateString());
}
private void InitializeComponent()
{
this.lstCustomers = new System.Windows.Forms.ListBox();
this.SuspendLayout();
//
// lstCustomers
//
this.lstCustomers.FormattingEnabled = true;
this.lstCustomers.Location = new System.Drawing.Point(12, 12);
this.lstCustomers.Name = "lstCustomers";
this.lstCustomers.Size = new System.Drawing.Size(120, 95);
this.lstCustomers.TabIndex = 0;
this.lstCustomers.SelectedIndexChanged += new System.EventHandler(this.lstCustomers_SelectedIndexChanged);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(308, 230);
this.Controls.Add(this.lstCustomers);
this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
public class Customer
{
public string FirstName;
public string LastName;
public DateTime BirthDate;
public Customer() { }
public Customer(string firstName, string lastName, DateTime birthDate)
{
FirstName = firstName;
LastName = lastName;
BirthDate = birthDate;
}
public override string ToString()
{
return FirstName + " " + LastName;
}
}
ListBox.Items.AddRange
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form
{
private System.Windows.Forms.Label lblSaturation;
private System.Windows.Forms.Label lblHue;
private System.Windows.Forms.Label lblBrightness;
private System.Windows.Forms.Label Label1;
private System.Windows.Forms.ListBox lstColors;
public Form1()
{
InitializeComponent();
string[] colorNames = System.Enum.GetNames(typeof(KnownColor));
lstColors.Items.AddRange(colorNames);
}
private void lstColors_SelectedIndexChanged(object sender, EventArgs e)
{
KnownColor selectedColor = (KnownColor)System.Enum.Parse(typeof(KnownColor), lstColors.Text);
this.BackColor = System.Drawing.Color.FromKnownColor(selectedColor);
lblBrightness.Text = "Brightness = " + this.BackColor.GetBrightness().ToString();
lblHue.Text = "Hue = " + this.BackColor.GetHue().ToString();
lblSaturation.Text = "Saturation = " + this.BackColor.GetSaturation().ToString();
}
private void InitializeComponent()
{
this.lblSaturation = new System.Windows.Forms.Label();
this.lblHue = new System.Windows.Forms.Label();
this.lblBrightness = new System.Windows.Forms.Label();
this.Label1 = new System.Windows.Forms.Label();
this.lstColors = new System.Windows.Forms.ListBox();
this.SuspendLayout();
//
// lblSaturation
//
this.lblSaturation.BackColor = System.Drawing.SystemColors.ActiveCaptionText;
this.lblSaturation.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.lblSaturation.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.lblSaturation.Location = new System.Drawing.Point(268, 57);
this.lblSaturation.Name = "lblSaturation";
this.lblSaturation.Size = new System.Drawing.Size(136, 20);
this.lblSaturation.TabIndex = 4;
this.lblSaturation.Text = " Saturation";
//
// lblHue
//
this.lblHue.BackColor = System.Drawing.SystemColors.ActiveCaptionText;
this.lblHue.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.lblHue.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.lblHue.Location = new System.Drawing.Point(268, 33);
this.lblHue.Name = "lblHue";
this.lblHue.Size = new System.Drawing.Size(136, 20);
this.lblHue.TabIndex = 3;
this.lblHue.Text = " Hue";
//
// lblBrightness
//
this.lblBrightness.BackColor = System.Drawing.SystemColors.ActiveCaptionText;
this.lblBrightness.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.lblBrightness.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.lblBrightness.Location = new System.Drawing.Point(268, 9);
this.lblBrightness.Name = "lblBrightness";
this.lblBrightness.Size = new System.Drawing.Size(136, 20);
this.lblBrightness.TabIndex = 2;
this.lblBrightness.Text = " Brightness";
//
// Label1
//
this.Label1.BackColor = System.Drawing.SystemColors.ActiveCaptionText;
this.Label1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.Label1.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.Label1.Location = new System.Drawing.Point(12, 9);
this.Label1.Name = "Label1";
this.Label1.Size = new System.Drawing.Size(200, 20);
this.Label1.TabIndex = 0;
this.Label1.Text = " Choose a Background Color:";
//
// lstColors
//
this.lstColors.FormattingEnabled = true;
this.lstColors.Location = new System.Drawing.Point(12, 37);
this.lstColors.Name = "lstColors";
this.lstColors.Size = new System.Drawing.Size(200, 238);
this.lstColors.TabIndex = 1;
this.lstColors.SelectedIndexChanged += new System.EventHandler(this.lstColors_SelectedIndexChanged);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(430, 284);
this.Controls.Add(this.lblSaturation);
this.Controls.Add(this.lblHue);
this.Controls.Add(this.lblBrightness);
this.Controls.Add(this.Label1);
this.Controls.Add(this.lstColors);
this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.Name = "Form1";
this.Text = "Color Changer";
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
ListBox.Items.Clear()
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form
{
private System.Windows.Forms.ListBox displayListBox;
private System.Windows.Forms.TextBox inputTextBox;
private System.Windows.Forms.Button addButton;
private System.Windows.Forms.Button removeButton;
private System.Windows.Forms.Button clearButton;
public Form1() {
InitializeComponent();
}
private void addButton_Click( object sender, EventArgs e )
{
displayListBox.Items.Add( inputTextBox.Text );
inputTextBox.Clear();
}
private void removeButton_Click( object sender, EventArgs e )
{
if ( displayListBox.SelectedIndex != -1 )
displayListBox.Items.RemoveAt( displayListBox.SelectedIndex );
}
private void clearButton_Click( object sender, EventArgs e )
{
displayListBox.Items.Clear();
}
private void InitializeComponent()
{
this.displayListBox = new System.Windows.Forms.ListBox();
this.inputTextBox = new System.Windows.Forms.TextBox();
this.addButton = new System.Windows.Forms.Button();
this.removeButton = new System.Windows.Forms.Button();
this.clearButton = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// displayListBox
//
this.displayListBox.FormattingEnabled = true;
this.displayListBox.Location = new System.Drawing.Point(13, 12);
this.displayListBox.Name = "displayListBox";
this.displayListBox.Size = new System.Drawing.Size(119, 238);
this.displayListBox.TabIndex = 0;
//
// inputTextBox
//
this.inputTextBox.Location = new System.Drawing.Point(149, 12);
this.inputTextBox.Name = "inputTextBox";
this.inputTextBox.Size = new System.Drawing.Size(100, 20);
this.inputTextBox.TabIndex = 1;
//
// addButton
//
this.addButton.Location = new System.Drawing.Point(149, 56);
this.addButton.Name = "addButton";
this.addButton.Size = new System.Drawing.Size(100, 36);
this.addButton.TabIndex = 2;
this.addButton.Text = "Add";
this.addButton.Click += new System.EventHandler(this.addButton_Click);
//
// removeButton
//
this.removeButton.Location = new System.Drawing.Point(149, 109);
this.removeButton.Name = "removeButton";
this.removeButton.Size = new System.Drawing.Size(100, 36);
this.removeButton.TabIndex = 3;
this.removeButton.Text = "Remove";
this.removeButton.Click += new System.EventHandler(this.removeButton_Click);
//
// clearButton
//
this.clearButton.Location = new System.Drawing.Point(149, 165);
this.clearButton.Name = "clearButton";
this.clearButton.Size = new System.Drawing.Size(100, 36);
this.clearButton.TabIndex = 4;
this.clearButton.Text = "Clear";
this.clearButton.Click += new System.EventHandler(this.clearButton_Click);
// ListBoxTestForm
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(263, 268);
this.Controls.Add(this.clearButton);
this.Controls.Add(this.removeButton);
this.Controls.Add(this.addButton);
this.Controls.Add(this.inputTextBox);
this.Controls.Add(this.displayListBox);
this.Name = "ListBoxTestForm";
this.Text = "ListBoxTest";
this.ResumeLayout(false);
this.PerformLayout();
}
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
ListBox.Items.RemoveAt
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form
{
private System.Windows.Forms.ListBox displayListBox;
private System.Windows.Forms.TextBox inputTextBox;
private System.Windows.Forms.Button addButton;
private System.Windows.Forms.Button removeButton;
private System.Windows.Forms.Button clearButton;
public Form1() {
InitializeComponent();
}
private void addButton_Click( object sender, EventArgs e )
{
displayListBox.Items.Add( inputTextBox.Text );
inputTextBox.Clear();
}
private void removeButton_Click( object sender, EventArgs e )
{
if ( displayListBox.SelectedIndex != -1 )
displayListBox.Items.RemoveAt( displayListBox.SelectedIndex );
}
private void clearButton_Click( object sender, EventArgs e )
{
displayListBox.Items.Clear();
}
private void InitializeComponent()
{
this.displayListBox = new System.Windows.Forms.ListBox();
this.inputTextBox = new System.Windows.Forms.TextBox();
this.addButton = new System.Windows.Forms.Button();
this.removeButton = new System.Windows.Forms.Button();
this.clearButton = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// displayListBox
//
this.displayListBox.FormattingEnabled = true;
this.displayListBox.Location = new System.Drawing.Point(13, 12);
this.displayListBox.Name = "displayListBox";
this.displayListBox.Size = new System.Drawing.Size(119, 238);
this.displayListBox.TabIndex = 0;
//
// inputTextBox
//
this.inputTextBox.Location = new System.Drawing.Point(149, 12);
this.inputTextBox.Name = "inputTextBox";
this.inputTextBox.Size = new System.Drawing.Size(100, 20);
this.inputTextBox.TabIndex = 1;
//
// addButton
//
this.addButton.Location = new System.Drawing.Point(149, 56);
this.addButton.Name = "addButton";
this.addButton.Size = new System.Drawing.Size(100, 36);
this.addButton.TabIndex = 2;
this.addButton.Text = "Add";
this.addButton.Click += new System.EventHandler(this.addButton_Click);
//
// removeButton
//
this.removeButton.Location = new System.Drawing.Point(149, 109);
this.removeButton.Name = "removeButton";
this.removeButton.Size = new System.Drawing.Size(100, 36);
this.removeButton.TabIndex = 3;
this.removeButton.Text = "Remove";
this.removeButton.Click += new System.EventHandler(this.removeButton_Click);
//
// clearButton
//
this.clearButton.Location = new System.Drawing.Point(149, 165);
this.clearButton.Name = "clearButton";
this.clearButton.Size = new System.Drawing.Size(100, 36);
this.clearButton.TabIndex = 4;
this.clearButton.Text = "Clear";
this.clearButton.Click += new System.EventHandler(this.clearButton_Click);
// ListBoxTestForm
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(263, 268);
this.Controls.Add(this.clearButton);
this.Controls.Add(this.removeButton);
this.Controls.Add(this.addButton);
this.Controls.Add(this.inputTextBox);
this.Controls.Add(this.displayListBox);
this.Name = "ListBoxTestForm";
this.Text = "ListBoxTest";
this.ResumeLayout(false);
this.PerformLayout();
}
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
ListBox.ScrollAlwaysVisible
using System;
using System.Drawing;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
public class ListBoxSelectionMode : Form
{
ListBox lb;
RadioButton rdoMultiExtended;
RadioButton rdoMultiSimple;
RadioButton rdoMultiOne;
TextBox txtTop;
Button btnTop;
public ListBoxSelectionMode()
{
int xSize, ySize;
Size = new Size(300,400);
lb = new ListBox();
lb.Parent = this;
lb.Location = new Point(10,10);
lb.Size = new Size(ClientSize.Width - 20, Height - 200);
lb.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Bottom;
lb.BorderStyle = BorderStyle.Fixed3D;
lb.MultiColumn = true;
lb.ScrollAlwaysVisible = true;
GroupBox grpMulti = new GroupBox();
grpMulti.Parent = this;
grpMulti.Text = "MultiSelect";
grpMulti.Location = new Point(lb.Left, lb.Bottom + 25);
grpMulti.Anchor = AnchorStyles.Left | AnchorStyles.Bottom;
rdoMultiOne = new RadioButton();
rdoMultiOne.Parent = grpMulti;
rdoMultiOne.Text = "One";
rdoMultiOne.Tag = SelectionMode.One;
rdoMultiOne.Checked = true;
rdoMultiOne.Location = new Point(10,15);
rdoMultiOne.CheckedChanged += new System.EventHandler(rdoMulti_CheckedChanged);
rdoMultiSimple = new RadioButton();
rdoMultiSimple.Parent = grpMulti;
rdoMultiSimple.Text = "Multi-Simple";
rdoMultiSimple.Tag = SelectionMode.MultiSimple;
rdoMultiSimple.Location = new Point(10, rdoMultiOne.Bottom);
rdoMultiSimple.CheckedChanged += new System.EventHandler(rdoMulti_CheckedChanged);
rdoMultiExtended = new RadioButton();
rdoMultiExtended.Parent = grpMulti;
rdoMultiExtended.Text = "Multi-Extended";
rdoMultiExtended.Tag = SelectionMode.MultiExtended;
rdoMultiExtended.Location = new Point(10, rdoMultiSimple.Bottom);
rdoMultiExtended.CheckedChanged += new System.EventHandler(rdoMulti_CheckedChanged);
xSize = (int)(Font.Height * .75) * rdoMultiExtended.Text.Length;
ySize = ((int)rdoMultiOne.Height * 3) + 20;
grpMulti.Size = new Size(xSize, ySize);
Panel pnlTop = new Panel();
pnlTop.Parent = this;
pnlTop.Location = new Point(lb.Left, grpMulti.Bottom + 10);
pnlTop.Anchor = AnchorStyles.Left | AnchorStyles.Bottom;
Label lblTop = new Label();
lblTop.Parent = pnlTop;
lblTop.Text = "TopIndex: ";
xSize = ((int)(Font.Height * .5) * lblTop.Text.Length);
lblTop.Size = new Size(xSize, Font.Height + 10);
txtTop = new TextBox();
txtTop.Parent = pnlTop;
txtTop.Location = new Point(lblTop.Right, lblTop.Top);
txtTop.Text = lb.TopIndex.ToString();
txtTop.Size = new Size((int)(Font.Height * .75) * 3,
Font.Height + 10);
btnTop = new Button();
btnTop.Parent = pnlTop;
btnTop.Text = "Update";
btnTop.Location = new Point(txtTop.Right + 10, txtTop.Top);
btnTop.Click += new System.EventHandler(btnTop_Click);
lb.Items.Add("12345");
lb.Items.Add("67890");
lb.Items.Add("7890");
lb.Items.Add("890");
}
static void Main()
{
Application.Run(new ListBoxSelectionMode());
}
private void rdoMulti_CheckedChanged(object sender, EventArgs e)
{
RadioButton rdo = (RadioButton)sender;
lb.SelectionMode = (SelectionMode)rdo.Tag;
}
private void btnTop_Click(object sender, EventArgs e)
{
txtTop.Text = lb.TopIndex.ToString();
}
}
ListBox.SelectedIndex
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class ListBoxDemo : System.Windows.Forms.Form {
private System.ruponentModel.Container container;
private System.Windows.Forms.Button buttonAdd;
private System.Windows.Forms.Button buttonClose;
private System.Windows.Forms.Button buttonModify;
private System.Windows.Forms.Button buttonDelete;
private System.Windows.Forms.Button buttonMoveUp;
private System.Windows.Forms.Button buttonMoveDown;
private System.Windows.Forms.ListBox listbox;
private System.Windows.Forms.TextBox textbox;
private System.Windows.Forms.Label label;
private int nSelectedIndex;
//*********SIZE & LOCATION******************//
// COMPONENT - BUTTON(s) aligned along X-axis.
const int BUTTON_LENGTH = 50;
const int BUTTON_HEIGHT = 20;
const int FIRSTBUTTON_XPOS = 20;
const int FIRSTBUTTON_YPOS =220;
const int XSPACING = 70; // (Note: XSPACING >= BUTTON_LENGTH)
const int YSPACING = 0;
//COMPONENT - MOVE BUTTONS
const int MBUTTON_LENGTH = 20;
const int MBUTTON_HEIGHT = 20;
const int FIRSTMBUTTON_XPOS = 220;
const int FIRSTMBUTTON_YPOS =70;
const int SECONDMBUTTON_XPOS = 220;
const int SECONDMBUTTON_YPOS =100;
// COMPONENT - LISTBOX
const int LISTBOX_LENGTH = 3*BUTTON_LENGTH;
const int LISTBOX_HEIGHT = 6*BUTTON_HEIGHT;
const int LISTBOX_XPOS = 50;
const int LISTBOX_YPOS = 50;
// COMPONENT - LABEL
const int LABEL_LENGTH = 50;
const int LABEL_HEIGHT = 50;
const int LABEL_XPOS = 20; // align it with first button
const int LABEL_YPOS = 173;
// COMPONENT - TEXTBOX
const int TEXTBOX_LENGTH = 120;
const int TEXTBOX_HEIGHT = 50;
const int TEXTBOX_XPOS = 70;
const int TEXTBOX_YPOS = 170;
public ListBoxDemo() : base() {
InitializeComponent();
}
private void InitializeComponent() {
// this
this.container = new System.ruponentModel.Container();
this.Text="List Box";
// buttonAdd
this.buttonAdd = new System.Windows.Forms.Button();
buttonAdd.Location = new
System.Drawing.Point(FIRSTBUTTON_XPOS,FIRSTBUTTON_YPOS);
buttonAdd.Text = "&Add";
buttonAdd.Size = new System.Drawing.Size(BUTTON_LENGTH,BUTTON_HEIGHT);
buttonAdd.Click += new System.EventHandler(this.buttonAdd_Click);
buttonAdd.Enabled = false;
this.Controls.Add(this.buttonAdd);
//buttonModify
this.buttonModify = new System.Windows.Forms.Button();
buttonModify.Location = new
System.Drawing.Point(FIRSTBUTTON_XPOS+XSPACING,FIRSTBUTTON_YPOS+YSPACING);
buttonModify.Text = "&Modify";
buttonModify.Size = new System.Drawing.Size(BUTTON_LENGTH,BUTTON_HEIGHT);
buttonModify.Click += new System.EventHandler(this.buttonModify_Click);
buttonModify.Enabled = false;
this.Controls.Add(this.buttonModify);
//buttonDelete
this.buttonDelete = new System.Windows.Forms.Button();
buttonDelete.Location = new
System.Drawing.Point(FIRSTBUTTON_XPOS+2*XSPACING,FIRSTBUTTON_YPOS+2*YSPACING);
buttonDelete.Text = "&Delete";
buttonDelete.Size = new System.Drawing.Size(BUTTON_LENGTH,BUTTON_HEIGHT);
buttonDelete.Enabled = false;
buttonDelete.Click += new System.EventHandler(this.buttonDelete_Click);
this.Controls.Add(this.buttonDelete);
// buttonClose
this.buttonClose = new System.Windows.Forms.Button();
buttonClose.Location = new
System.Drawing.Point(FIRSTBUTTON_XPOS+3*XSPACING,FIRSTBUTTON_YPOS+3*YSPACING);
buttonClose.Text = "&Close";
buttonClose.Size = new System.Drawing.Size(BUTTON_LENGTH,BUTTON_HEIGHT);
buttonClose.Click += new System.EventHandler(this.buttonClose_Click);
this.Controls.Add(this.buttonClose);
// listbox
this.listbox = new System.Windows.Forms.ListBox();
listbox.Location = new System.Drawing.Point(LISTBOX_XPOS,LISTBOX_YPOS);
listbox.Size = new System.Drawing.Size(LISTBOX_LENGTH,LISTBOX_HEIGHT);
listbox.Click += new
System.EventHandler(this.listbox_SelectedIndexChanged);
listbox.BackColor = (Color)System.Drawing.SystemColors.Desktop;
this.Controls.Add(this.listbox);
// label
this.label = new System.Windows.Forms.Label();
label.Location = new System.Drawing.Point(LABEL_XPOS,LABEL_YPOS);
label.Size = new System.Drawing.Size(LABEL_LENGTH,LABEL_HEIGHT);
label.Text = "Enter:";
this.Controls.Add(this.label);
// textbox
this.textbox = new System.Windows.Forms.TextBox();
textbox.Location = new System.Drawing.Point(TEXTBOX_XPOS,TEXTBOX_YPOS);
textbox.Click += new System.EventHandler(this.textbox_Click);
textbox.Size = new System.Drawing.Size(TEXTBOX_LENGTH,TEXTBOX_HEIGHT);
this.Controls.Add(this.textbox);
// buttonMoveUp
this.buttonMoveUp = new System.Windows.Forms.Button();
buttonMoveUp.Location = new
System.Drawing.Point(FIRSTMBUTTON_XPOS,FIRSTMBUTTON_YPOS);
buttonMoveUp.Text = "<";
buttonMoveUp.Size = new
System.Drawing.Size(MBUTTON_LENGTH,MBUTTON_HEIGHT);
buttonMoveUp.Click += new System.EventHandler(this.buttonMoveUp_Click);
buttonMoveUp.Enabled = false;
this.Controls.Add(this.buttonMoveUp);
// buttonMoveDown
this.buttonMoveDown = new System.Windows.Forms.Button();
buttonMoveDown.Location = new
System.Drawing.Point(SECONDMBUTTON_XPOS,SECONDMBUTTON_YPOS);
buttonMoveDown.Text = ">";
buttonMoveDown.Size = new
System.Drawing.Size(MBUTTON_LENGTH,MBUTTON_HEIGHT);
buttonMoveDown.Click += new
System.EventHandler(this.buttonMoveDown_Click);
buttonMoveDown.Enabled = false;
this.Controls.Add(this.buttonMoveDown);
}
protected void textbox_Click(Object sender, System.EventArgs e) {
this.buttonAdd.Enabled = true;
if (this.listbox.Items.Count>0)
EnableAllListBoxButtons();
}
protected void listbox_SelectedIndexChanged(object sender, System.EventArgs e) {
nSelectedIndex = this.listbox.SelectedIndex;
string szSelected = (string)this.listbox.SelectedItem;
this.textbox.Text = szSelected;
}
protected void buttonAdd_Click(Object sender, System.EventArgs e) {
if (this.textbox.Text !="") {
this.listbox.Items.Add(this.textbox.Text);
this.textbox.Text = "";
EnableAllListBoxButtons();
}
}
protected void buttonModify_Click(Object sender, System.EventArgs e) {
this.listbox.Items[nSelectedIndex] = this.textbox.Text;
}
protected void buttonDelete_Click(Object sender, System.EventArgs e) {
nSelectedIndex = this.listbox.SelectedIndex;
this.listbox.Items.Remove(nSelectedIndex);
System.Console.WriteLine("Remove fn does not work...");
}
protected void buttonClose_Click(Object sender, System.EventArgs e) {
this.Close();
}
protected void buttonMoveUp_Click(Object sender, System.EventArgs e) {
if (this.listbox.SelectedIndex >0)
this.listbox.SelectedIndex--;
}
protected void buttonMoveDown_Click(Object sender, System.EventArgs e) {
if (this.listbox.SelectedIndex < this.listbox.Items.Count-1)
this.listbox.SelectedIndex++;
}
private void EnableAllListBoxButtons() {
this.buttonAdd.Enabled = true;
this.buttonModify.Enabled = true;
this.buttonDelete.Enabled = true;
this.buttonMoveUp.Enabled = true;
this.buttonMoveDown.Enabled = true;
}
[STAThread]
public static void Main(string[] args) {
Application.Run(new ListBoxDemo());
}
}
ListBox.SelectedIndexChanged
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form
{
private System.Windows.Forms.ListBox lstCustomers;
public Form1() {
InitializeComponent();
lstCustomers.Items.Add(new Customer("A", "B", DateTime.Now.AddDays(-10)));
lstCustomers.Items.Add(new Customer("C", "D", DateTime.Now.AddDays(-100)));
lstCustomers.Items.Add(new Customer("F", "G", DateTime.Now.AddDays(-500)));
}
private void lstCustomers_SelectedIndexChanged(object sender, EventArgs e)
{
Customer cust = (Customer)lstCustomers.SelectedItem;
MessageBox.Show("Birth Date: " + cust.BirthDate.ToShortDateString());
}
private void InitializeComponent()
{
this.lstCustomers = new System.Windows.Forms.ListBox();
this.SuspendLayout();
//
// lstCustomers
//
this.lstCustomers.FormattingEnabled = true;
this.lstCustomers.Location = new System.Drawing.Point(12, 12);
this.lstCustomers.Name = "lstCustomers";
this.lstCustomers.Size = new System.Drawing.Size(120, 95);
this.lstCustomers.TabIndex = 0;
this.lstCustomers.SelectedIndexChanged += new System.EventHandler(this.lstCustomers_SelectedIndexChanged);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(308, 230);
this.Controls.Add(this.lstCustomers);
this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
public class Customer
{
public string FirstName;
public string LastName;
public DateTime BirthDate;
public Customer() { }
public Customer(string firstName, string lastName, DateTime birthDate)
{
FirstName = firstName;
LastName = lastName;
BirthDate = birthDate;
}
public override string ToString()
{
return FirstName + " " + LastName;
}
}
ListBox.SelectedValueChanged
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
public class Employee{
public string ID;
public string Name ;
public Employee(string strName, string strID)
{
this.ID = strID;
this.Name = strName;
}
public override string ToString()
{
return this.ID + " : " + this.Name;
}
}
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.RadioButton rbAuthors;
private System.Windows.Forms.RadioButton rbEmployees;
private System.Windows.Forms.ListBox lb;
private DataTable dataTable;
private ArrayList Employees = new ArrayList();
private System.ruponentModel.Container components = null;
public Form1()
{
InitializeComponent();
lb.Items.Add("A");
lb.Items.Add("B");
lb.Items.Add("C");
lb.Items.Add("D");
lb.Items.Add("E");
lb.SelectedIndex = 0;
// populate the arraylist for later use.
Employees.Add(new Employee("A", "1"));
Employees.Add(new Employee("B", "2"));
Employees.Add(new Employee("C", "3"));
Employees.Add(new Employee("D", "4"));
Employees.Add(new Employee("E", "5"));
Employees.Add(new Employee("F", "6"));
Employees.Add(new Employee("G", "7"));
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
private void InitializeComponent()
{
this.lb = new System.Windows.Forms.ListBox();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.rbEmployees = new System.Windows.Forms.RadioButton();
this.rbAuthors = new System.Windows.Forms.RadioButton();
this.groupBox1.SuspendLayout();
this.SuspendLayout();
//
// lb
//
this.lb.Location = new System.Drawing.Point(16, 8);
this.lb.Name = "lb";
this.lb.Size = new System.Drawing.Size(232, 212);
this.lb.TabIndex = 0;
this.lb.DisplayMemberChanged += new System.EventHandler(this.lb_DisplayMemberChanged);
this.lb.ValueMemberChanged += new System.EventHandler(this.lb_ValueMemberChanged);
this.lb.DataSourceChanged += new System.EventHandler(this.lb_DataSourceChanged);
this.lb.SelectedValueChanged += new System.EventHandler(this.lb_SelectedValueChanged);
this.lb.SelectedIndexChanged += new System.EventHandler(this.lb_SelectedIndexChanged);
//
// groupBox1
//
this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
this.rbEmployees,
this.rbAuthors});
this.groupBox1.Location = new System.Drawing.Point(16, 240);
this.groupBox1.Name = "groupBox1";
this.groupBox1.TabIndex = 1;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "DataSource";
//
// rbEmployees
//
this.rbEmployees.Location = new System.Drawing.Point(24, 56);
this.rbEmployees.Name = "rbEmployees";
this.rbEmployees.TabIndex = 1;
this.rbEmployees.Text = "Employee\"s";
this.rbEmployees.CheckedChanged += new System.EventHandler(this.rb_CheckedChanged);
//
// rbAuthors
//
this.rbAuthors.Checked = true;
this.rbAuthors.Location = new System.Drawing.Point(24, 32);
this.rbAuthors.Name = "rbAuthors";
this.rbAuthors.TabIndex = 0;
this.rbAuthors.TabStop = true;
this.rbAuthors.Text = "Authors";
this.rbAuthors.CheckedChanged += new System.EventHandler(this.rb_CheckedChanged);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(264, 389);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.groupBox1,
this.lb});
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
this.groupBox1.ResumeLayout(false);
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void rb_CheckedChanged(object sender, System.EventArgs e)
{
lb.DataSource = Employees;
lb.DisplayMember = "Name";
lb.ValueMember = "ID";
}
private void lb_SelectedIndexChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.SelectedIndex.ToString()+ "\n" + lb.GetItemText(lb.SelectedItem),"lb_SelectedIndexChanged");
}
private void lb_SelectedValueChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.GetItemText(lb.SelectedItem),"lb_SelectedValueChanged");
}
private void lb_DataSourceChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.DataSource.ToString(), "lb_DataSourceChanged");
}
private void lb_DisplayMemberChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.DisplayMember.ToString(), "lb_DisplayMemberChanged");
}
private void lb_ValueMemberChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.ValueMember.ToString(), "lb_ValueMemberChanged");
}
private void Form1_Load(object sender, System.EventArgs e)
{
this.lb.SelectedValueChanged += new System.EventHandler(this.lb_SelectedValueChanged);
this.lb.SelectedIndexChanged += new System.EventHandler(this.lb_SelectedIndexChanged);
}
}
ListBox.SelectionMode
using System;
using System.Drawing;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
public class ListBoxSelectionMode : Form
{
ListBox lb;
RadioButton rdoMultiExtended;
RadioButton rdoMultiSimple;
RadioButton rdoMultiOne;
TextBox txtTop;
Button btnTop;
public ListBoxSelectionMode()
{
int xSize, ySize;
Size = new Size(300,400);
lb = new ListBox();
lb.Parent = this;
lb.Location = new Point(10,10);
lb.Size = new Size(ClientSize.Width - 20, Height - 200);
lb.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Bottom;
lb.BorderStyle = BorderStyle.Fixed3D;
lb.MultiColumn = true;
lb.ScrollAlwaysVisible = true;
GroupBox grpMulti = new GroupBox();
grpMulti.Parent = this;
grpMulti.Text = "MultiSelect";
grpMulti.Location = new Point(lb.Left, lb.Bottom + 25);
grpMulti.Anchor = AnchorStyles.Left | AnchorStyles.Bottom;
rdoMultiOne = new RadioButton();
rdoMultiOne.Parent = grpMulti;
rdoMultiOne.Text = "One";
rdoMultiOne.Tag = SelectionMode.One;
rdoMultiOne.Checked = true;
rdoMultiOne.Location = new Point(10,15);
rdoMultiOne.CheckedChanged += new System.EventHandler(rdoMulti_CheckedChanged);
rdoMultiSimple = new RadioButton();
rdoMultiSimple.Parent = grpMulti;
rdoMultiSimple.Text = "Multi-Simple";
rdoMultiSimple.Tag = SelectionMode.MultiSimple;
rdoMultiSimple.Location = new Point(10, rdoMultiOne.Bottom);
rdoMultiSimple.CheckedChanged += new System.EventHandler(rdoMulti_CheckedChanged);
rdoMultiExtended = new RadioButton();
rdoMultiExtended.Parent = grpMulti;
rdoMultiExtended.Text = "Multi-Extended";
rdoMultiExtended.Tag = SelectionMode.MultiExtended;
rdoMultiExtended.Location = new Point(10, rdoMultiSimple.Bottom);
rdoMultiExtended.CheckedChanged += new System.EventHandler(rdoMulti_CheckedChanged);
xSize = (int)(Font.Height * .75) * rdoMultiExtended.Text.Length;
ySize = ((int)rdoMultiOne.Height * 3) + 20;
grpMulti.Size = new Size(xSize, ySize);
Panel pnlTop = new Panel();
pnlTop.Parent = this;
pnlTop.Location = new Point(lb.Left, grpMulti.Bottom + 10);
pnlTop.Anchor = AnchorStyles.Left | AnchorStyles.Bottom;
Label lblTop = new Label();
lblTop.Parent = pnlTop;
lblTop.Text = "TopIndex: ";
xSize = ((int)(Font.Height * .5) * lblTop.Text.Length);
lblTop.Size = new Size(xSize, Font.Height + 10);
txtTop = new TextBox();
txtTop.Parent = pnlTop;
txtTop.Location = new Point(lblTop.Right, lblTop.Top);
txtTop.Text = lb.TopIndex.ToString();
txtTop.Size = new Size((int)(Font.Height * .75) * 3,
Font.Height + 10);
btnTop = new Button();
btnTop.Parent = pnlTop;
btnTop.Text = "Update";
btnTop.Location = new Point(txtTop.Right + 10, txtTop.Top);
btnTop.Click += new System.EventHandler(btnTop_Click);
lb.Items.Add("12345");
lb.Items.Add("67890");
lb.Items.Add("7890");
lb.Items.Add("890");
}
static void Main()
{
Application.Run(new ListBoxSelectionMode());
}
private void rdoMulti_CheckedChanged(object sender, EventArgs e)
{
RadioButton rdo = (RadioButton)sender;
lb.SelectionMode = (SelectionMode)rdo.Tag;
}
private void btnTop_Click(object sender, EventArgs e)
{
txtTop.Text = lb.TopIndex.ToString();
}
}
ListBox.TopIndex
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form
{
private System.Windows.Forms.GroupBox GroupBox1;
private System.Windows.Forms.Label Label4;
private System.Windows.Forms.Label Label1;
private System.Windows.Forms.PictureBox pic;
private System.Windows.Forms.TextBox txt;
private System.Windows.Forms.Button cmd;
private System.Windows.Forms.Label Label2;
private System.Windows.Forms.Label Label3;
private System.Windows.Forms.ListBox eventLogList;
public Form1() {
InitializeComponent();
}
private void Log(String data)
{
eventLogList.Items.Add(data);
int itemsPerPage = (int)(eventLogList.Height / eventLogList.ItemHeight);
eventLogList.TopIndex = eventLogList.Items.Count - itemsPerPage;
}
private void txt_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
{
Log("Key Down: " + e.KeyCode.ToString() + e.KeyValue.ToString());
}
private void txt_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
Log("Key Press: " + e.KeyChar.ToString());
}
private void txt_KeyUp(object sender, System.Windows.Forms.KeyEventArgs e)
{
Log("Key Up: " + e.KeyCode.ToString() + e.KeyValue.ToString() + " Text is: " + txt.Text);
}
private void txt_TextChanged(object sender, System.EventArgs e)
{
Log("Changed: " + " Text is: " + txt.Text);
}
private void pic_MouseEnter(object sender, System.EventArgs e)
{
Log("Mouse Enter");
}
private void pic_MouseHover(object sender, System.EventArgs e)
{
Log("Mouse Hover");
}
private void pic_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
Log("Mouse Down: X=" + e.X.ToString() + " Y=" + e.Y.ToString() + " Button=" + e.Button.ToString());
}
private void pic_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
Log("Mouse Up: X=" + e.X.ToString() + " Y=" + e.Y.ToString() + " Button=" + e.Button.ToString());
}
private void pic_Click(object sender, System.EventArgs e)
{
Log("Click");
}
private void pic_DoubleClick(object sender, System.EventArgs e)
{
Log("Double Click");
}
private void pic_MouseLeave(object sender, System.EventArgs e)
{
Log("Mouse Leave");
}
private void InitializeComponent()
{
this.GroupBox1 = new System.Windows.Forms.GroupBox();
this.Label4 = new System.Windows.Forms.Label();
this.Label1 = new System.Windows.Forms.Label();
this.pic = new System.Windows.Forms.PictureBox();
this.txt = new System.Windows.Forms.TextBox();
this.cmd = new System.Windows.Forms.Button();
this.Label2 = new System.Windows.Forms.Label();
this.Label3 = new System.Windows.Forms.Label();
this.eventLogList = new System.Windows.Forms.ListBox();
this.GroupBox1.SuspendLayout();
((System.ruponentModel.ISupportInitialize)(this.pic)).BeginInit();
this.SuspendLayout();
//
// GroupBox1
//
this.GroupBox1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.GroupBox1.Controls.Add(this.Label4);
this.GroupBox1.Controls.Add(this.Label1);
this.GroupBox1.Controls.Add(this.pic);
this.GroupBox1.Controls.Add(this.txt);
this.GroupBox1.Controls.Add(this.cmd);
this.GroupBox1.Controls.Add(this.Label2);
this.GroupBox1.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.GroupBox1.Location = new System.Drawing.Point(7, 0);
this.GroupBox1.Name = "GroupBox1";
this.GroupBox1.Size = new System.Drawing.Size(384, 148);
this.GroupBox1.TabIndex = 12;
this.GroupBox1.TabStop = false;
//
// Label4
//
this.Label4.Location = new System.Drawing.Point(92, 108);
this.Label4.Name = "Label4";
this.Label4.Size = new System.Drawing.Size(56, 16);
this.Label4.TabIndex = 5;
this.Label4.Text = "And here:";
//
// Label1
//
this.Label1.Location = new System.Drawing.Point(6, 24);
this.Label1.Name = "Label1";
this.Label1.Size = new System.Drawing.Size(144, 16);
this.Label1.TabIndex = 2;
this.Label1.Text = "Test keyboard events here:";
//
// pic
//
this.pic.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.pic.Location = new System.Drawing.Point(156, 48);
this.pic.Name = "pic";
this.pic.Size = new System.Drawing.Size(192, 48);
this.pic.TabIndex = 3;
this.pic.TabStop = false;
this.pic.DoubleClick += new System.EventHandler(this.pic_DoubleClick);
this.pic.Click += new System.EventHandler(this.pic_Click);
this.pic.MouseHover += new System.EventHandler(this.pic_MouseHover);
this.pic.MouseUp += new System.Windows.Forms.MouseEventHandler(this.pic_MouseUp);
this.pic.MouseEnter += new System.EventHandler(this.pic_MouseEnter);
this.pic.MouseDown += new System.Windows.Forms.MouseEventHandler(this.pic_MouseDown);
//
// txt
//
this.txt.Location = new System.Drawing.Point(156, 20);
this.txt.Name = "txt";
this.txt.Size = new System.Drawing.Size(192, 21);
this.txt.TabIndex = 1;
this.txt.KeyUp += new System.Windows.Forms.KeyEventHandler(this.txt_KeyUp);
this.txt.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.txt_KeyPress);
this.txt.TextChanged += new System.EventHandler(this.txt_TextChanged);
this.txt.KeyDown += new System.Windows.Forms.KeyEventHandler(this.txt_KeyDown);
//
// cmd
//
this.cmd.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.cmd.Location = new System.Drawing.Point(156, 100);
this.cmd.Name = "cmd";
this.cmd.Size = new System.Drawing.Size(88, 28);
this.cmd.TabIndex = 4;
this.cmd.Text = "Button1";
this.cmd.MouseLeave += new System.EventHandler(this.pic_MouseLeave);
this.cmd.Click += new System.EventHandler(this.pic_Click);
this.cmd.MouseEnter += new System.EventHandler(this.pic_MouseEnter);
this.cmd.MouseHover += new System.EventHandler(this.pic_MouseHover);
this.cmd.MouseUp += new System.Windows.Forms.MouseEventHandler(this.pic_MouseUp);
this.cmd.MouseDown += new System.Windows.Forms.MouseEventHandler(this.pic_MouseDown);
//
// Label2
//
this.Label2.Location = new System.Drawing.Point(20, 52);
this.Label2.Name = "Label2";
this.Label2.Size = new System.Drawing.Size(128, 16);
this.Label2.TabIndex = 2;
this.Label2.Text = "Test mouse events here:";
//
// Label3
//
this.Label3.Location = new System.Drawing.Point(23, 100);
this.Label3.Name = "Label3";
this.Label3.Size = new System.Drawing.Size(64, 24);
this.Label3.TabIndex = 11;
this.Label3.Text = "Label3";
//
// eventLogList
//
this.eventLogList.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.eventLogList.FormattingEnabled = true;
this.eventLogList.IntegralHeight = false;
this.eventLogList.Location = new System.Drawing.Point(7, 156);
this.eventLogList.Name = "eventLogList";
this.eventLogList.Size = new System.Drawing.Size(384, 212);
this.eventLogList.TabIndex = 10;
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(399, 374);
this.Controls.Add(this.GroupBox1);
this.Controls.Add(this.Label3);
this.Controls.Add(this.eventLogList);
this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.Name = "Form1";
this.Text = "Event Tracker";
this.GroupBox1.ResumeLayout(false);
this.GroupBox1.PerformLayout();
((System.ruponentModel.ISupportInitialize)(this.pic)).EndInit();
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
ListBox.ValueMemberChanged
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
public class Employee{
public string ID;
public string Name ;
public Employee(string strName, string strID)
{
this.ID = strID;
this.Name = strName;
}
public override string ToString()
{
return this.ID + " : " + this.Name;
}
}
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.RadioButton rbAuthors;
private System.Windows.Forms.RadioButton rbEmployees;
private System.Windows.Forms.ListBox lb;
private DataTable dataTable;
private ArrayList Employees = new ArrayList();
private System.ruponentModel.Container components = null;
public Form1()
{
InitializeComponent();
lb.Items.Add("A");
lb.Items.Add("B");
lb.Items.Add("C");
lb.Items.Add("D");
lb.Items.Add("E");
lb.SelectedIndex = 0;
// populate the arraylist for later use.
Employees.Add(new Employee("A", "1"));
Employees.Add(new Employee("B", "2"));
Employees.Add(new Employee("C", "3"));
Employees.Add(new Employee("D", "4"));
Employees.Add(new Employee("E", "5"));
Employees.Add(new Employee("F", "6"));
Employees.Add(new Employee("G", "7"));
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
private void InitializeComponent()
{
this.lb = new System.Windows.Forms.ListBox();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.rbEmployees = new System.Windows.Forms.RadioButton();
this.rbAuthors = new System.Windows.Forms.RadioButton();
this.groupBox1.SuspendLayout();
this.SuspendLayout();
//
// lb
//
this.lb.Location = new System.Drawing.Point(16, 8);
this.lb.Name = "lb";
this.lb.Size = new System.Drawing.Size(232, 212);
this.lb.TabIndex = 0;
this.lb.DisplayMemberChanged += new System.EventHandler(this.lb_DisplayMemberChanged);
this.lb.ValueMemberChanged += new System.EventHandler(this.lb_ValueMemberChanged);
this.lb.DataSourceChanged += new System.EventHandler(this.lb_DataSourceChanged);
this.lb.SelectedValueChanged += new System.EventHandler(this.lb_SelectedValueChanged);
this.lb.SelectedIndexChanged += new System.EventHandler(this.lb_SelectedIndexChanged);
//
// groupBox1
//
this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
this.rbEmployees,
this.rbAuthors});
this.groupBox1.Location = new System.Drawing.Point(16, 240);
this.groupBox1.Name = "groupBox1";
this.groupBox1.TabIndex = 1;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "DataSource";
//
// rbEmployees
//
this.rbEmployees.Location = new System.Drawing.Point(24, 56);
this.rbEmployees.Name = "rbEmployees";
this.rbEmployees.TabIndex = 1;
this.rbEmployees.Text = "Employee\"s";
this.rbEmployees.CheckedChanged += new System.EventHandler(this.rb_CheckedChanged);
//
// rbAuthors
//
this.rbAuthors.Checked = true;
this.rbAuthors.Location = new System.Drawing.Point(24, 32);
this.rbAuthors.Name = "rbAuthors";
this.rbAuthors.TabIndex = 0;
this.rbAuthors.TabStop = true;
this.rbAuthors.Text = "Authors";
this.rbAuthors.CheckedChanged += new System.EventHandler(this.rb_CheckedChanged);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(264, 389);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.groupBox1,
this.lb});
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
this.groupBox1.ResumeLayout(false);
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void rb_CheckedChanged(object sender, System.EventArgs e)
{
lb.DataSource = Employees;
lb.DisplayMember = "Name";
lb.ValueMember = "ID";
}
private void lb_SelectedIndexChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.SelectedIndex.ToString()+ "\n" + lb.GetItemText(lb.SelectedItem),"lb_SelectedIndexChanged");
}
private void lb_SelectedValueChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.GetItemText(lb.SelectedItem),"lb_SelectedValueChanged");
}
private void lb_DataSourceChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.DataSource.ToString(), "lb_DataSourceChanged");
}
private void lb_DisplayMemberChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.DisplayMember.ToString(), "lb_DisplayMemberChanged");
}
private void lb_ValueMemberChanged(object sender, System.EventArgs e)
{
MessageBox.Show(lb.ValueMember.ToString(), "lb_ValueMemberChanged");
}
private void Form1_Load(object sender, System.EventArgs e)
{
this.lb.SelectedValueChanged += new System.EventHandler(this.lb_SelectedValueChanged);
this.lb.SelectedIndexChanged += new System.EventHandler(this.lb_SelectedIndexChanged);
}
}