Csharp/C Sharp by API/System.Windows.Forms/TextBox
Содержание
- 1 TextBox.AcceptsTab
- 2 TextBox.Anchor
- 3 TextBox.BorderStyle
- 4 TextBox.CanFocus
- 5 TextBox.Clear()
- 6 TextBox.Click
- 7 TextBox.ContainsFocus
- 8 TextBox.ContextMenu
- 9 TextBox.DataBindings
- 10 TextBox.DoDragDrop
- 11 TextBox.DragDrop
- 12 TextBox.DragEnter
- 13 TextBox.Focus()
- 14 TextBox.Focused
- 15 TextBox.GotFocus
- 16 TextBox.KeyPress
- 17 TextBox.Lines
- 18 TextBox.LostFocus
- 19 TextBox.MouseDown
- 20 TextBox.Multiline
- 21 TextBox.PasswordChar
- 22 TextBox.ScrollBars
- 23 TextBox.SelectAll()
- 24 TextBox.SelectedText
- 25 TextBox.SelectionLength
- 26 TextBox.TextChanged
- 27 TextBox.Validated
- 28 TextBox.Validating
TextBox.AcceptsTab
<source lang="csharp"> /* Professional Windows GUI Programming Using C# by Jay Glynn, Csaba Torok, Richard Conway, Wahid Choudhury,
Zach Greenvoss, Shripad Kulkarni, Neil Whitlow
Publisher: Peer Information ISBN: 1861007663
- /
using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; namespace TextBox {
/// <summary>
/// Summary description for TextBox.
/// </summary>
public class TextBox : System.Windows.Forms.Form
{
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.TextBox SINGLE_LINE;
private System.Windows.Forms.TextBox PASSWORD_LINE;
private System.Windows.Forms.TextBox MULTI_LINE;
private System.Windows.Forms.RichTextBox RICH_EDIT;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ruponentModel.Container components = null;
public TextBox()
{
//
// 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.SINGLE_LINE = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.PASSWORD_LINE = new System.Windows.Forms.TextBox();
this.label2 = new System.Windows.Forms.Label();
this.label3 = new System.Windows.Forms.Label();
this.MULTI_LINE = new System.Windows.Forms.TextBox();
this.RICH_EDIT = new System.Windows.Forms.RichTextBox();
this.label4 = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// SINGLE_LINE
//
this.SINGLE_LINE.CharacterCasing = System.Windows.Forms.CharacterCasing.Upper;
this.SINGLE_LINE.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(128)), ((System.Byte)(64)), ((System.Byte)(64)));
this.SINGLE_LINE.Location = new System.Drawing.Point(32, 40);
this.SINGLE_LINE.Name = "SINGLE_LINE";
this.SINGLE_LINE.Size = new System.Drawing.Size(408, 20);
this.SINGLE_LINE.TabIndex = 0;
this.SINGLE_LINE.Text = "THIS IS A SINGLELINE EDIT CONTROL";
//
// label1
//
this.label1.Location = new System.Drawing.Point(32, 24);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(168, 16);
this.label1.TabIndex = 1;
this.label1.Text = "Single Line TextBox";
//
// PASSWORD_LINE
//
this.PASSWORD_LINE.Font = new System.Drawing.Font("Microsoft Sans Serif", 9.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.PASSWORD_LINE.Location = new System.Drawing.Point(32, 104);
this.PASSWORD_LINE.Name = "PASSWORD_LINE";
this.PASSWORD_LINE.PasswordChar = "^";
this.PASSWORD_LINE.Size = new System.Drawing.Size(104, 22);
this.PASSWORD_LINE.TabIndex = 2;
this.PASSWORD_LINE.Text = "";
//
// label2
//
this.label2.Location = new System.Drawing.Point(32, 80);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(160, 16);
this.label2.TabIndex = 3;
this.label2.Text = "Password TextBox";
//
// label3
//
this.label3.Location = new System.Drawing.Point(32, 136);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(120, 16);
this.label3.TabIndex = 4;
this.label3.Text = "MultiLine TextBox";
//
// MULTI_LINE
//
this.MULTI_LINE.AcceptsReturn = true;
this.MULTI_LINE.AcceptsTab = true;
this.MULTI_LINE.Font = new System.Drawing.Font("Microsoft Sans Serif", 9.75F, (System.Drawing.FontStyle.Bold | System.Drawing.FontStyle.Italic), System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.MULTI_LINE.ForeColor = System.Drawing.SystemColors.HotTrack;
this.MULTI_LINE.Location = new System.Drawing.Point(32, 160);
this.MULTI_LINE.MaxLength = 10000;
this.MULTI_LINE.Multiline = true;
this.MULTI_LINE.Name = "MULTI_LINE";
this.MULTI_LINE.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
this.MULTI_LINE.Size = new System.Drawing.Size(408, 104);
this.MULTI_LINE.TabIndex = 5;
this.MULTI_LINE.Text = "";
//
// RICH_EDIT
//
this.RICH_EDIT.Font = new System.Drawing.Font("Verdana", 9.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.RICH_EDIT.ForeColor = System.Drawing.Color.Red;
this.RICH_EDIT.Location = new System.Drawing.Point(32, 296);
this.RICH_EDIT.Name = "RICH_EDIT";
this.RICH_EDIT.ShowSelectionMargin = true;
this.RICH_EDIT.Size = new System.Drawing.Size(408, 120);
this.RICH_EDIT.TabIndex = 6;
this.RICH_EDIT.Text = "richTextBox1";
this.RICH_EDIT.ZoomFactor = 4.999695F;
//
// label4
//
this.label4.Location = new System.Drawing.Point(32, 272);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(152, 16);
this.label4.TabIndex = 7;
this.label4.Text = "RichEdit Text Box";
//
// TextBox
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(464, 453);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.label4,
this.RICH_EDIT,
this.MULTI_LINE,
this.label3,
this.label2,
this.PASSWORD_LINE,
this.label1,
this.SINGLE_LINE});
this.Name = "TextBox";
this.Text = "TextBox Controls";
this.Load += new System.EventHandler(this.TextBox_Load);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new TextBox());
}
private void TextBox_Load(object sender, System.EventArgs e)
{
RICH_EDIT.LoadFile("c:\\temp\\RTFDOC.RTF");
}
}
}
</source>
TextBox.Anchor
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms; public class TextBoxTextChanged : Form {
TextBox txt;
string strOriginal;
public TextBoxTextChanged()
{
Size = new Size(300, 375);
txt = new TextBox();
txt.Parent = this;
txt.Text = "Enter text here.";
txt.Size = new Size(ClientSize.Width - 20, ClientSize.Height - 100);
txt.Location = new Point(10,10);
txt.Multiline = true;
txt.BorderStyle = BorderStyle.Fixed3D;
txt.ScrollBars = ScrollBars.Vertical;
txt.Anchor = AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Top | AnchorStyles.Bottom;
strOriginal = txt.Text;
}
static void Main()
{
Application.Run(new TextBoxTextChanged());
}
}
</source>
TextBox.BorderStyle
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms; public class TextBoxTextChanged : Form {
TextBox txt;
string strOriginal;
public TextBoxTextChanged()
{
Size = new Size(300, 375);
txt = new TextBox();
txt.Parent = this;
txt.Text = "Enter text here.";
txt.Size = new Size(ClientSize.Width - 20, ClientSize.Height - 100);
txt.Location = new Point(10,10);
txt.TextChanged += new System.EventHandler(txt_TextChanged);
txt.Multiline = true;
txt.BorderStyle = BorderStyle.Fixed3D;
txt.ScrollBars = ScrollBars.Vertical;
txt.Anchor = AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Top | AnchorStyles.Bottom;
strOriginal = txt.Text;
}
static void Main()
{
Application.Run(new TextBoxTextChanged());
}
private void txt_TextChanged(object sender, EventArgs e)
{
if (strOriginal == txt.Text)
txt.Modified = false;
else
txt.Modified = true;
if (txt.Modified)
MessageBox.Show("changed");
else
MessageBox.Show("no change");
}
}
</source>
TextBox.CanFocus
<source lang="csharp"> using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data;
public class FocusForm : System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox txtFocusForm;
private System.Windows.Forms.Button btFocusForm;
public FocusForm()
{
this.txtFocusForm = new System.Windows.Forms.TextBox();
this.btFocusForm = new System.Windows.Forms.Button();
this.SuspendLayout();
this.txtFocusForm.Location = new System.Drawing.Point(8, 8);
this.txtFocusForm.Size = new System.Drawing.Size(336, 20);
this.txtFocusForm.LostFocus += new System.EventHandler(this.txtFocusForm_LostFocus);
this.txtFocusForm.GotFocus += new System.EventHandler(this.txtFocusForm_GotFocus);
this.btFocusForm.Location = new System.Drawing.Point(8, 40);
this.btFocusForm.Size = new System.Drawing.Size(336, 23);
this.btFocusForm.Text = "This button does nothing";
this.btFocusForm.Click += new System.EventHandler(this.btFocusForm_Click);
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(352, 70);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.btFocusForm,
this.txtFocusForm});
this.MaximizeBox = false;
this.Name = "FocusForm";
this.Text = "FocusForm";
this.ResumeLayout(false);
}
static void Main()
{
Application.Run(new FocusForm());
}
protected void txtFocusForm_LostFocus(object sender, EventArgs e)
{
// MessageBox.Show("Goodbye!");
}
protected void txtFocusForm_GotFocus(object sender, EventArgs e)
{
// MessageBox.Show("Hello!");
}
private void btFocusForm_Click(object sender, System.EventArgs e)
{
bool canFocus = txtFocusForm.CanFocus;
bool containsFocus = this.ContainsFocus;
bool focused = txtFocusForm.Focused;
MessageBox.Show("Textbox can focus: " + canFocus +
"\nForm children contain focus: " + containsFocus +
"\nTextbox has focus: " + focused);
txtFocusForm.Focus();
}
}
</source>
TextBox.Clear()
<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.IO; public class SimpleEditorForm : Form {
private string filename = "Untitled";
public SimpleEditorForm(string filename) {
InitializeComponent();
if (filename != null) {
this.filename = filename;
OpenFile();
}
}
protected void OpenFile() {
try {
textBoxEdit.Clear();
textBoxEdit.Text = File.ReadAllText(filename);
} catch (IOException ex) {
MessageBox.Show(ex.Message, "Simple Editor",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
private void OnFileNew(object sender, EventArgs e) {
filename = "Untitled";
textBoxEdit.Clear();
}
private void OnFileOpen(object sender, EventArgs e) {
if (dlgOpenFile.ShowDialog() == DialogResult.OK) {
filename = dlgOpenFile.FileName;
OpenFile();
}
}
private void OnFileSave(object sender, EventArgs e) {
}
private void OnFileSaveAs(object sender, EventArgs e) {
}
private void InitializeComponent() {
this.textBoxEdit = new System.Windows.Forms.TextBox();
this.mainMenu = new System.Windows.Forms.MenuStrip();
this.miFile = new System.Windows.Forms.ToolStripMenuItem();
this.miFileNew = new System.Windows.Forms.ToolStripMenuItem();
this.miFileOpen = new System.Windows.Forms.ToolStripMenuItem();
this.miFileSave = new System.Windows.Forms.ToolStripMenuItem();
this.miFileSaveAs = new System.Windows.Forms.ToolStripMenuItem();
this.dlgOpenFile = new System.Windows.Forms.OpenFileDialog();
this.mainMenu.SuspendLayout();
this.SuspendLayout();
//
// textBoxEdit
//
this.textBoxEdit.AcceptsReturn = true;
this.textBoxEdit.AcceptsTab = true;
this.textBoxEdit.Dock = System.Windows.Forms.DockStyle.Fill;
this.textBoxEdit.Location = new System.Drawing.Point(0, 24);
this.textBoxEdit.Multiline = true;
this.textBoxEdit.Name = "textBoxEdit";
this.textBoxEdit.ScrollBars = System.Windows.Forms.ScrollBars.Both;
this.textBoxEdit.Size = new System.Drawing.Size(562, 219);
this.textBoxEdit.TabIndex = 0;
//
// mainMenu
//
this.mainMenu.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
this.miFile});
this.mainMenu.Location = new System.Drawing.Point(0, 0);
this.mainMenu.Name = "mainMenu";
this.mainMenu.Size = new System.Drawing.Size(562, 24);
this.mainMenu.TabIndex = 1;
this.mainMenu.Text = "menuStrip1";
//
// miFile
//
this.miFile.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
this.miFileNew,
this.miFileOpen,
this.miFileSave,
this.miFileSaveAs});
this.miFile.Name = "miFile";
this.miFile.Text = "&File";
//
// miFileNew
//
this.miFileNew.Name = "miFileNew";
this.miFileNew.Text = "&New";
this.miFileNew.Click += new System.EventHandler(this.OnFileNew);
//
// miFileOpen
//
this.miFileOpen.Name = "miFileOpen";
this.miFileOpen.Text = "&Open";
this.miFileOpen.Click += new System.EventHandler(this.OnFileOpen);
//
// miFileSave
//
this.miFileSave.Name = "miFileSave";
this.miFileSave.Text = "&Save";
this.miFileSave.Click += new System.EventHandler(this.OnFileSave);
//
// miFileSaveAs
//
this.miFileSaveAs.Name = "miFileSaveAs";
this.miFileSaveAs.Text = "Save &As";
this.miFileSaveAs.Click += new System.EventHandler(this.OnFileSaveAs);
//
// dlgOpenFile
//
this.dlgOpenFile.Filter = "Text Documents (*.txt)|*.txt|Wrox Documents (*.wroxtext)|*.wroxtext|All Files|*.*" +
"";
this.dlgOpenFile.FilterIndex = 2;
//
// SimpleEditorForm
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(562, 243);
this.Controls.Add(this.textBoxEdit);
this.Controls.Add(this.mainMenu);
this.MainMenuStrip = this.mainMenu;
this.Name = "SimpleEditorForm";
this.Text = "Simple Editor";
this.mainMenu.ResumeLayout(false);
this.ResumeLayout(false);
this.PerformLayout();
}
private System.Windows.Forms.TextBox textBoxEdit;
private System.Windows.Forms.MenuStrip mainMenu;
private System.Windows.Forms.ToolStripMenuItem miFile;
private System.Windows.Forms.ToolStripMenuItem miFileNew;
private System.Windows.Forms.ToolStripMenuItem miFileOpen;
private System.Windows.Forms.ToolStripMenuItem miFileSave;
private System.Windows.Forms.ToolStripMenuItem miFileSaveAs;
private System.Windows.Forms.OpenFileDialog dlgOpenFile;
[STAThread]
static void Main(string[] args) {
string filename = null;
if (args.Length != 0)
filename = args[0];
Application.EnableVisualStyles();
Application.Run(new SimpleEditorForm(filename));
}
}
</source>
TextBox.Click
<source lang="csharp">
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 {
Label Label1;
TextBox TextBox1;
Button Button1;
public Form1()
{
InitializeComponent();
}
private void ctrlClick(System.Object sender, EventArgs e)
{
Control ctrl = (Control)sender;
MessageBox.Show("You clicked: " + ctrl.Name);
}
private void InitializeComponent()
{
this.Label1 = new System.Windows.Forms.Label();
this.TextBox1 = new System.Windows.Forms.TextBox();
this.Button1 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// Label1
//
this.Label1.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.Label1.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.Label1.Location = new System.Drawing.Point(14, 97);
this.Label1.Name = "Label1";
this.Label1.Size = new System.Drawing.Size(112, 24);
this.Label1.TabIndex = 8;
this.Label1.Text = "Label1";
this.Label1.Click += new System.EventHandler(this.ctrlClick);
//
// TextBox1
//
this.TextBox1.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.TextBox1.Location = new System.Drawing.Point(12, 61);
this.TextBox1.Name = "TextBox1";
this.TextBox1.Size = new System.Drawing.Size(156, 21);
this.TextBox1.TabIndex = 7;
this.TextBox1.Text = "TextBox1";
this.TextBox1.Click += new System.EventHandler(this.ctrlClick);
//
// Button1
//
this.Button1.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.Button1.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.Button1.Location = new System.Drawing.Point(12, 21);
this.Button1.Name = "Button1";
this.Button1.Size = new System.Drawing.Size(96, 28);
this.Button1.TabIndex = 6;
this.Button1.Text = "Button1";
this.Button1.Click += new System.EventHandler(this.ctrlClick);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(367, 281);
this.Controls.Add(this.Label1);
this.Controls.Add(this.TextBox1);
this.Controls.Add(this.Button1);
this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.Name = "Form1";
this.Text = "Control Medley";
this.ResumeLayout(false);
this.PerformLayout();
}
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
</source>
TextBox.ContainsFocus
<source lang="csharp"> using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data;
public class FocusForm : System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox txtFocusForm;
private System.Windows.Forms.Button btFocusForm;
public FocusForm()
{
this.txtFocusForm = new System.Windows.Forms.TextBox();
this.btFocusForm = new System.Windows.Forms.Button();
this.SuspendLayout();
this.txtFocusForm.Location = new System.Drawing.Point(8, 8);
this.txtFocusForm.Size = new System.Drawing.Size(336, 20);
this.txtFocusForm.LostFocus += new System.EventHandler(this.txtFocusForm_LostFocus);
this.txtFocusForm.GotFocus += new System.EventHandler(this.txtFocusForm_GotFocus);
this.btFocusForm.Location = new System.Drawing.Point(8, 40);
this.btFocusForm.Size = new System.Drawing.Size(336, 23);
this.btFocusForm.Text = "This button does nothing";
this.btFocusForm.Click += new System.EventHandler(this.btFocusForm_Click);
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(352, 70);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.btFocusForm,
this.txtFocusForm});
this.MaximizeBox = false;
this.Name = "FocusForm";
this.Text = "FocusForm";
this.ResumeLayout(false);
}
static void Main()
{
Application.Run(new FocusForm());
}
protected void txtFocusForm_LostFocus(object sender, EventArgs e)
{
// MessageBox.Show("Goodbye!");
}
protected void txtFocusForm_GotFocus(object sender, EventArgs e)
{
// MessageBox.Show("Hello!");
}
private void btFocusForm_Click(object sender, System.EventArgs e)
{
bool canFocus = txtFocusForm.CanFocus;
bool containsFocus = this.ContainsFocus;
bool focused = txtFocusForm.Focused;
MessageBox.Show("Textbox can focus: " + canFocus +
"\nForm children contain focus: " + containsFocus +
"\nTextbox has focus: " + focused);
txtFocusForm.Focus();
}
}
</source>
TextBox.ContextMenu
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms; public class TextBoxContextMenuDemo : Form {
public TextBoxContextMenuDemo()
{
InitializeComponent();
ContextMenu mnuContext = new ContextMenu();
foreach (MenuItem mnuItem in mnuFile.MenuItems)
{
mnuContext.MenuItems.Add(mnuItem.CloneMenu());
}
TextBox1.ContextMenu = mnuContext;
}
private void TextBox1_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
TextBox1.ContextMenu.Show(TextBox1, new Point(e.X, e.Y));
}
}
private void mnuOpen_Click(object sender, EventArgs e)
{
MessageBox.Show("This is the event handler for Open.","TextBoxContextMenuDemo");
}
private void mnuSave_Click(object sender, EventArgs e)
{
MessageBox.Show("This is the event handler for Save.","TextBoxContextMenuDemo");
}
private void mnuExit_Click(object sender, EventArgs e)
{
MessageBox.Show("This is the event handler for Exit.","TextBoxContextMenuDemo");
}
[STAThread]
public static void Main(string[] args)
{
Application.Run(new TextBoxContextMenuDemo());
}
private System.Windows.Forms.MainMenu MainMenu1;
private System.Windows.Forms.MenuItem mnuFile;
private System.Windows.Forms.MenuItem mnuOpen;
private System.Windows.Forms.MenuItem mnuSave;
private System.Windows.Forms.MenuItem mnuExit;
private System.Windows.Forms.MenuItem MenuItem5;
private System.Windows.Forms.MenuItem MenuItem6;
private System.Windows.Forms.MenuItem MenuItem7;
private System.Windows.Forms.MenuItem MenuItem8;
private System.Windows.Forms.TextBox TextBox1;
private System.ruponentModel.IContainer components = null;
private void InitializeComponent()
{
this.ruponents = new System.ruponentModel.Container();
this.MainMenu1 = new System.Windows.Forms.MainMenu(this.ruponents);
this.mnuFile = new System.Windows.Forms.MenuItem();
this.mnuOpen = new System.Windows.Forms.MenuItem();
this.mnuSave = new System.Windows.Forms.MenuItem();
this.mnuExit = new System.Windows.Forms.MenuItem();
this.MenuItem5 = new System.Windows.Forms.MenuItem();
this.MenuItem6 = new System.Windows.Forms.MenuItem();
this.MenuItem7 = new System.Windows.Forms.MenuItem();
this.MenuItem8 = new System.Windows.Forms.MenuItem();
this.TextBox1 = new System.Windows.Forms.TextBox();
this.SuspendLayout();
//
// MainMenu1
//
this.MainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.mnuFile,
this.MenuItem5});
//
// mnuFile
//
this.mnuFile.Index = 0;
this.mnuFile.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.mnuOpen,
this.mnuSave,
this.mnuExit});
this.mnuFile.Text = "File";
//
// mnuOpen
//
this.mnuOpen.Index = 0;
this.mnuOpen.Text = "Open";
this.mnuOpen.Click += new System.EventHandler(this.mnuOpen_Click);
//
// mnuSave
//
this.mnuSave.Index = 1;
this.mnuSave.Text = "Save";
this.mnuSave.Click += new System.EventHandler(this.mnuSave_Click);
//
// mnuExit
//
this.mnuExit.Index = 2;
this.mnuExit.Text = "Exit";
this.mnuExit.Click += new System.EventHandler(this.mnuExit_Click);
//
// MenuItem5
//
this.MenuItem5.Index = 1;
this.MenuItem5.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.MenuItem6,
this.MenuItem7,
this.MenuItem8});
this.MenuItem5.Text = "Edit";
//
// MenuItem6
//
this.MenuItem6.Index = 0;
this.MenuItem6.Text = "Cut";
//
// MenuItem7
//
this.MenuItem7.Index = 1;
this.MenuItem7.Text = "Copy";
//
// MenuItem8
//
this.MenuItem8.Index = 2;
this.MenuItem8.Text = "Paste";
//
// TextBox1
//
this.TextBox1.Location = new System.Drawing.Point(44, 56);
this.TextBox1.Multiline = true;
this.TextBox1.Name = "TextBox1";
this.TextBox1.Size = new System.Drawing.Size(180, 88);
this.TextBox1.TabIndex = 1;
this.TextBox1.Text = "Right click here to view the cloned context menu.";
this.TextBox1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.TextBox1_MouseDown);
//
// TextBoxContextMenuDemo
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(292, 266);
this.Controls.Add(this.TextBox1);
this.Menu = this.MainMenu1;
this.ResumeLayout(false);
this.PerformLayout();
}
}
</source>
TextBox.DataBindings
<source lang="csharp"> using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; using System.Data.SqlClient;
public class Form1 : System.Windows.Forms.Form {
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.Button buttonBack;
private System.Windows.Forms.Button buttonNext;
private System.Data.DataSet dataSet1;
private System.ruponentModel.Container components = null;
private BindingManagerBase bMgr;
public Form1() {
InitializeComponent();
}
private void InitializeComponent() {
this.textBox1 = new System.Windows.Forms.TextBox();
this.textBox2 = new System.Windows.Forms.TextBox();
this.buttonBack = new System.Windows.Forms.Button();
this.buttonNext = new System.Windows.Forms.Button();
this.dataSet1 = new System.Data.DataSet();
((System.ruponentModel.ISupportInitialize)(this.dataSet1)).BeginInit();
this.SuspendLayout();
this.textBox1.Location = new System.Drawing.Point(8, 8);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(160, 20);
this.textBox1.TabIndex = 0;
this.textBox1.Text = "textBox1";
this.textBox2.Location = new System.Drawing.Point(8, 40);
this.textBox2.Name = "textBox2";
this.textBox2.Size = new System.Drawing.Size(160, 20);
this.textBox2.TabIndex = 1;
this.textBox2.Text = "textBox2";
this.buttonBack.Location = new System.Drawing.Point(24, 80);
this.buttonBack.Name = "buttonBack";
this.buttonBack.Size = new System.Drawing.Size(56, 23);
this.buttonBack.TabIndex = 2;
this.buttonBack.Text = "<< Back";
this.buttonBack.Click += new System.EventHandler(this.buttonBack_Click);
this.buttonNext.Location = new System.Drawing.Point(96, 80);
this.buttonNext.Name = "buttonNext";
this.buttonNext.Size = new System.Drawing.Size(56, 23);
this.buttonNext.TabIndex = 3;
this.buttonNext.Text = "Next>>";
this.buttonNext.Click += new System.EventHandler(this.buttonNext_Click);
this.dataSet1.DataSetName = "NewDataSet";
this.dataSet1.Locale = new System.Globalization.CultureInfo("en-US");
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(176, 108);
this.Controls.Add(this.buttonNext);
this.Controls.Add(this.buttonBack);
this.Controls.Add(this.textBox2);
this.Controls.Add(this.textBox1);
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
((System.ruponentModel.ISupportInitialize)(this.dataSet1)).EndInit();
this.ResumeLayout(false);
}
static void Main() {
Application.Run(new Form1());
}
private void Form1_Load(object sender, System.EventArgs e) {
string connString = "server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI";
string sql = @"select * from employee ";
SqlConnection conn = new SqlConnection(connString);
SqlDataAdapter da = new SqlDataAdapter(sql, conn);
da.Fill(dataSet1, "employee");
textBox1.DataBindings.Add("text", dataSet1, "employee.firstname");
textBox2.DataBindings.Add("text", dataSet1, "employee.lastname");
bMgr = this.BindingContext[dataSet1, "employee"];
}
private void buttonNext_Click(object sender, System.EventArgs e) {
bMgr.Position += 1;
}
private void buttonBack_Click(object sender, System.EventArgs e) {
bMgr.Position -= 1;
}
}
</source>
TextBox.DoDragDrop
<source lang="csharp">
using System; using System.Windows.Forms; public class TextBoxDragDropDemo : Form {
public TextBoxDragDropDemo()
{
InitializeComponent();
}
private void TextBox_MouseDown(object sender, MouseEventArgs e)
{
TextBox txt = (TextBox)sender;
txt.SelectAll();
txt.DoDragDrop(txt.Text, DragDropEffects.Copy);
}
private void TextBox_DragEnter(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(DataFormats.Text))
{
e.Effect = DragDropEffects.Copy;
}
else
{
e.Effect = DragDropEffects.None;
}
}
private void TextBox_DragDrop(object sender, DragEventArgs e)
{
TextBox txt = (TextBox)sender;
txt.Text = (string)e.Data.GetData(DataFormats.Text);
}
[STAThread]
public static void Main(string[] args)
{
Application.Run(new TextBoxDragDropDemo());
}
private System.Windows.Forms.TextBox TextBox2;
private System.Windows.Forms.TextBox TextBox1;
private void InitializeComponent()
{
this.TextBox2 = new System.Windows.Forms.TextBox();
this.TextBox1 = new System.Windows.Forms.TextBox();
this.SuspendLayout();
this.TextBox2.AllowDrop = true;
this.TextBox2.Location = new System.Drawing.Point(28, 129);
this.TextBox2.Multiline = true;
this.TextBox2.Size = new System.Drawing.Size(196, 77);
this.TextBox2.DragDrop += new System.Windows.Forms.DragEventHandler(this.TextBox_DragDrop);
this.TextBox2.DragEnter += new System.Windows.Forms.DragEventHandler(this.TextBox_DragEnter);
this.TextBox2.MouseDown += new System.Windows.Forms.MouseEventHandler(this.TextBox_MouseDown);
this.TextBox1.AllowDrop = true;
this.TextBox1.Location = new System.Drawing.Point(28, 36);
this.TextBox1.Multiline = true;
this.TextBox1.Size = new System.Drawing.Size(196, 77);
this.TextBox1.DragDrop += new System.Windows.Forms.DragEventHandler(this.TextBox_DragDrop);
this.TextBox1.DragEnter += new System.Windows.Forms.DragEventHandler(this.TextBox_DragEnter);
this.TextBox1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.TextBox_MouseDown);
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(292, 266);
this.Controls.Add(this.TextBox2);
this.Controls.Add(this.TextBox1);
this.ResumeLayout(false);
this.PerformLayout();
}
}
</source>
TextBox.DragDrop
<source lang="csharp">
using System; using System.Windows.Forms; public class TextBoxDragDropDemo : Form {
public TextBoxDragDropDemo()
{
InitializeComponent();
}
private void TextBox_MouseDown(object sender, MouseEventArgs e)
{
TextBox txt = (TextBox)sender;
txt.SelectAll();
txt.DoDragDrop(txt.Text, DragDropEffects.Copy);
}
private void TextBox_DragEnter(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(DataFormats.Text))
{
e.Effect = DragDropEffects.Copy;
}
else
{
e.Effect = DragDropEffects.None;
}
}
private void TextBox_DragDrop(object sender, DragEventArgs e)
{
TextBox txt = (TextBox)sender;
txt.Text = (string)e.Data.GetData(DataFormats.Text);
}
[STAThread]
public static void Main(string[] args)
{
Application.Run(new TextBoxDragDropDemo());
}
private System.Windows.Forms.TextBox TextBox2;
private System.Windows.Forms.TextBox TextBox1;
private void InitializeComponent()
{
this.TextBox2 = new System.Windows.Forms.TextBox();
this.TextBox1 = new System.Windows.Forms.TextBox();
this.SuspendLayout();
this.TextBox2.AllowDrop = true;
this.TextBox2.Location = new System.Drawing.Point(28, 129);
this.TextBox2.Multiline = true;
this.TextBox2.Size = new System.Drawing.Size(196, 77);
this.TextBox2.DragDrop += new System.Windows.Forms.DragEventHandler(this.TextBox_DragDrop);
this.TextBox2.DragEnter += new System.Windows.Forms.DragEventHandler(this.TextBox_DragEnter);
this.TextBox2.MouseDown += new System.Windows.Forms.MouseEventHandler(this.TextBox_MouseDown);
this.TextBox1.AllowDrop = true;
this.TextBox1.Location = new System.Drawing.Point(28, 36);
this.TextBox1.Multiline = true;
this.TextBox1.Size = new System.Drawing.Size(196, 77);
this.TextBox1.DragDrop += new System.Windows.Forms.DragEventHandler(this.TextBox_DragDrop);
this.TextBox1.DragEnter += new System.Windows.Forms.DragEventHandler(this.TextBox_DragEnter);
this.TextBox1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.TextBox_MouseDown);
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(292, 266);
this.Controls.Add(this.TextBox2);
this.Controls.Add(this.TextBox1);
this.ResumeLayout(false);
this.PerformLayout();
}
}
</source>
TextBox.DragEnter
<source lang="csharp">
using System; using System.Windows.Forms; public class TextBoxDragDropDemo : Form {
public TextBoxDragDropDemo()
{
InitializeComponent();
}
private void TextBox_MouseDown(object sender, MouseEventArgs e)
{
TextBox txt = (TextBox)sender;
txt.SelectAll();
txt.DoDragDrop(txt.Text, DragDropEffects.Copy);
}
private void TextBox_DragEnter(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(DataFormats.Text))
{
e.Effect = DragDropEffects.Copy;
}
else
{
e.Effect = DragDropEffects.None;
}
}
private void TextBox_DragDrop(object sender, DragEventArgs e)
{
TextBox txt = (TextBox)sender;
txt.Text = (string)e.Data.GetData(DataFormats.Text);
}
[STAThread]
public static void Main(string[] args)
{
Application.Run(new TextBoxDragDropDemo());
}
private System.Windows.Forms.TextBox TextBox2;
private System.Windows.Forms.TextBox TextBox1;
private void InitializeComponent()
{
this.TextBox2 = new System.Windows.Forms.TextBox();
this.TextBox1 = new System.Windows.Forms.TextBox();
this.SuspendLayout();
this.TextBox2.AllowDrop = true;
this.TextBox2.Location = new System.Drawing.Point(28, 129);
this.TextBox2.Multiline = true;
this.TextBox2.Size = new System.Drawing.Size(196, 77);
this.TextBox2.DragDrop += new System.Windows.Forms.DragEventHandler(this.TextBox_DragDrop);
this.TextBox2.DragEnter += new System.Windows.Forms.DragEventHandler(this.TextBox_DragEnter);
this.TextBox2.MouseDown += new System.Windows.Forms.MouseEventHandler(this.TextBox_MouseDown);
this.TextBox1.AllowDrop = true;
this.TextBox1.Location = new System.Drawing.Point(28, 36);
this.TextBox1.Multiline = true;
this.TextBox1.Size = new System.Drawing.Size(196, 77);
this.TextBox1.DragDrop += new System.Windows.Forms.DragEventHandler(this.TextBox_DragDrop);
this.TextBox1.DragEnter += new System.Windows.Forms.DragEventHandler(this.TextBox_DragEnter);
this.TextBox1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.TextBox_MouseDown);
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(292, 266);
this.Controls.Add(this.TextBox2);
this.Controls.Add(this.TextBox1);
this.ResumeLayout(false);
this.PerformLayout();
}
}
</source>
TextBox.Focus()
<source lang="csharp">
using System; using System.Drawing; using System.Windows.Forms; public class EnterPrice : Form {
private Button enter = new Button();
private Label answer = new Label();
private TextBox text = new TextBox( );
public EnterPrice( ) {
enter.Text = "Enter Price";
text.Text = "";
answer.Text = "";
Size = new Size(300,200);
answer.Size = new Size(200,50);
enter.Location = new Point(30 + enter.Width, 30);
text.Location = new Point (40 + enter.Width + enter.Width, 30);
answer.Location = new Point(20, 60);
AcceptButton = enter;
Controls.Add(text);
Controls.Add(answer);
Controls.Add(enter);
enter.Click += new EventHandler(Enter_Click);
}
protected void Enter_Click(Object sender, EventArgs e) {
try{
Console.WriteLine(Double.Parse(text.Text));
}catch(Exception){
}
text.Text = "";
text.Focus();
}
static void Main() {
Application.Run(new EnterPrice());
}
}
</source>
TextBox.Focused
<source lang="csharp"> using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data;
public class FocusForm : System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox txtFocusForm;
private System.Windows.Forms.Button btFocusForm;
public FocusForm()
{
this.txtFocusForm = new System.Windows.Forms.TextBox();
this.btFocusForm = new System.Windows.Forms.Button();
this.SuspendLayout();
this.txtFocusForm.Location = new System.Drawing.Point(8, 8);
this.txtFocusForm.Size = new System.Drawing.Size(336, 20);
this.txtFocusForm.LostFocus += new System.EventHandler(this.txtFocusForm_LostFocus);
this.txtFocusForm.GotFocus += new System.EventHandler(this.txtFocusForm_GotFocus);
this.btFocusForm.Location = new System.Drawing.Point(8, 40);
this.btFocusForm.Size = new System.Drawing.Size(336, 23);
this.btFocusForm.Text = "This button does nothing";
this.btFocusForm.Click += new System.EventHandler(this.btFocusForm_Click);
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(352, 70);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.btFocusForm,
this.txtFocusForm});
this.MaximizeBox = false;
this.Name = "FocusForm";
this.Text = "FocusForm";
this.ResumeLayout(false);
}
static void Main()
{
Application.Run(new FocusForm());
}
protected void txtFocusForm_LostFocus(object sender, EventArgs e)
{
// MessageBox.Show("Goodbye!");
}
protected void txtFocusForm_GotFocus(object sender, EventArgs e)
{
// MessageBox.Show("Hello!");
}
private void btFocusForm_Click(object sender, System.EventArgs e)
{
bool canFocus = txtFocusForm.CanFocus;
bool containsFocus = this.ContainsFocus;
bool focused = txtFocusForm.Focused;
MessageBox.Show("Textbox can focus: " + canFocus +
"\nForm children contain focus: " + containsFocus +
"\nTextbox has focus: " + focused);
txtFocusForm.Focus();
}
}
</source>
TextBox.GotFocus
<source lang="csharp"> using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data;
public class FocusForm : System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox txtFocusForm;
private System.Windows.Forms.Button btFocusForm;
public FocusForm()
{
this.txtFocusForm = new System.Windows.Forms.TextBox();
this.btFocusForm = new System.Windows.Forms.Button();
this.SuspendLayout();
this.txtFocusForm.Location = new System.Drawing.Point(8, 8);
this.txtFocusForm.Size = new System.Drawing.Size(336, 20);
this.txtFocusForm.LostFocus += new System.EventHandler(this.txtFocusForm_LostFocus);
this.txtFocusForm.GotFocus += new System.EventHandler(this.txtFocusForm_GotFocus);
this.btFocusForm.Location = new System.Drawing.Point(8, 40);
this.btFocusForm.Size = new System.Drawing.Size(336, 23);
this.btFocusForm.Text = "This button does nothing";
this.btFocusForm.Click += new System.EventHandler(this.btFocusForm_Click);
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(352, 70);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.btFocusForm,
this.txtFocusForm});
this.MaximizeBox = false;
this.Name = "FocusForm";
this.Text = "FocusForm";
this.ResumeLayout(false);
}
static void Main()
{
Application.Run(new FocusForm());
}
protected void txtFocusForm_LostFocus(object sender, EventArgs e)
{
// MessageBox.Show("Goodbye!");
}
protected void txtFocusForm_GotFocus(object sender, EventArgs e)
{
// MessageBox.Show("Hello!");
}
private void btFocusForm_Click(object sender, System.EventArgs e)
{
bool canFocus = txtFocusForm.CanFocus;
bool containsFocus = this.ContainsFocus;
bool focused = txtFocusForm.Focused;
MessageBox.Show("Textbox can focus: " + canFocus +
"\nForm children contain focus: " + containsFocus +
"\nTextbox has focus: " + focused);
txtFocusForm.Focus();
}
}
</source>
TextBox.KeyPress
<source lang="csharp"> using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; public class TextCancelEventKeyEvent : System.Windows.Forms.Form {
private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox txtInput;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label lblTrue;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.Label lblCheck;
private System.Windows.Forms.Label lblResults;
public TextCancelEventKeyEvent()
{
InitializeComponent();
}
private void InitializeComponent()
{
this.label1 = new System.Windows.Forms.Label();
this.txtInput = new System.Windows.Forms.TextBox();
this.label2 = new System.Windows.Forms.Label();
this.lblTrue = new System.Windows.Forms.Label();
this.label3 = new System.Windows.Forms.Label();
this.lblCheck = new System.Windows.Forms.Label();
this.lblResults = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// label1
//
this.label1.Font = new System.Drawing.Font("Tahoma", 14.25F, (System.Drawing.FontStyle.Bold | System.Drawing.FontStyle.Italic), System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.label1.Location = new System.Drawing.Point(48, 16);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(176, 23);
this.label1.TabIndex = 0;
this.label1.Text = "ISBN Validation";
//
// txtInput
//
this.txtInput.Location = new System.Drawing.Point(72, 64);
this.txtInput.Name = "txtInput";
this.txtInput.TabIndex = 1;
this.txtInput.Text = "";
this.txtInput.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.txtInput_KeyPress);
this.txtInput.Validating += new System.ruponentModel.CancelEventHandler(this.handleCancleEvent);
//
// label2
//
this.label2.Location = new System.Drawing.Point(24, 104);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(80, 23);
this.label2.TabIndex = 2;
this.label2.Text = "True Number:";
//
// lblTrue
//
this.lblTrue.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.lblTrue.Location = new System.Drawing.Point(112, 104);
this.lblTrue.Name = "lblTrue";
this.lblTrue.TabIndex = 3;
//
// label3
//
this.label3.Location = new System.Drawing.Point(32, 152);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(72, 23);
this.label3.TabIndex = 4;
this.label3.Text = "Check Digit:";
//
// lblCheck
//
this.lblCheck.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.lblCheck.Location = new System.Drawing.Point(112, 152);
this.lblCheck.Name = "lblCheck";
this.lblCheck.TabIndex = 5;
//
// lblResults
//
this.lblResults.Location = new System.Drawing.Point(56, 192);
this.lblResults.Name = "lblResults";
this.lblResults.Size = new System.Drawing.Size(152, 24);
this.lblResults.TabIndex = 8;
//
// TextCancelEventKeyEvent
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(264, 293);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.lblResults,
this.lblCheck,
this.label3,
this.lblTrue,
this.label2,
this.txtInput,
this.label1});
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.Run(new TextCancelEventKeyEvent());
}
private void handleCancleEvent(object sender, System.ruponentModel.CancelEventArgs e)
{
TextBox tb = (TextBox)sender;
string strInput = tb.Text;
Console.WriteLine(strInput);
}
private void txtInput_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
char keyChar;
keyChar = e.KeyChar;
if(!Char.IsDigit(keyChar) // 0 - 9
&&
keyChar != 8 // backspace
&&
keyChar != 13 // enter
&&
keyChar != "x"
&&
keyChar != 45 // dash/minus
){
// Do not display the keystroke
e.Handled = true;
}
}
}
</source>
TextBox.Lines
<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; public partial class Form1 : Form {
public Form1()
{
InitializeComponent();
}
private void showLinesButton_Click(object sender, EventArgs e)
{
StringBuilder lineInfo = new StringBuilder();
lineInfo.Append("There are " + multiLineBox.Lines.Length.ToString() + " lines.\n");
foreach (string line in multiLineBox.Lines)
{
lineInfo.Append(line + "\n");
}
MessageBox.Show(lineInfo.ToString());
}
} partial class Form1 {
private void InitializeComponent()
{
this.multiLineBox = new System.Windows.Forms.TextBox();
this.showLinesButton = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// multiLineBox
//
this.multiLineBox.Location = new System.Drawing.Point(12, 12);
this.multiLineBox.Multiline = true;
this.multiLineBox.Name = "multiLineBox";
this.multiLineBox.Size = new System.Drawing.Size(268, 213);
this.multiLineBox.TabIndex = 0;
//
// showLinesButton
//
this.showLinesButton.Location = new System.Drawing.Point(205, 231);
this.showLinesButton.Name = "showLinesButton";
this.showLinesButton.Size = new System.Drawing.Size(75, 23);
this.showLinesButton.TabIndex = 1;
this.showLinesButton.Text = "Show Lines";
this.showLinesButton.Click += new System.EventHandler(this.showLinesButton_Click);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(292, 266);
this.Controls.Add(this.showLinesButton);
this.Controls.Add(this.multiLineBox);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
this.PerformLayout();
}
private System.Windows.Forms.TextBox multiLineBox;
private System.Windows.Forms.Button showLinesButton;
} public class TextBoxLineCountText {
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
</source>
TextBox.LostFocus
<source lang="csharp">
using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data;
public class FocusForm : System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox txtFocusForm;
private System.Windows.Forms.Button btFocusForm;
public FocusForm()
{
this.txtFocusForm = new System.Windows.Forms.TextBox();
this.btFocusForm = new System.Windows.Forms.Button();
this.SuspendLayout();
this.txtFocusForm.Location = new System.Drawing.Point(8, 8);
this.txtFocusForm.Size = new System.Drawing.Size(336, 20);
this.txtFocusForm.LostFocus += new System.EventHandler(this.txtFocusForm_LostFocus);
this.txtFocusForm.GotFocus += new System.EventHandler(this.txtFocusForm_GotFocus);
this.btFocusForm.Location = new System.Drawing.Point(8, 40);
this.btFocusForm.Size = new System.Drawing.Size(336, 23);
this.btFocusForm.Text = "This button does nothing";
this.btFocusForm.Click += new System.EventHandler(this.btFocusForm_Click);
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(352, 70);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.btFocusForm,
this.txtFocusForm});
this.MaximizeBox = false;
this.Name = "FocusForm";
this.Text = "FocusForm";
this.ResumeLayout(false);
}
static void Main()
{
Application.Run(new FocusForm());
}
protected void txtFocusForm_LostFocus(object sender, EventArgs e)
{
// MessageBox.Show("Goodbye!");
}
protected void txtFocusForm_GotFocus(object sender, EventArgs e)
{
// MessageBox.Show("Hello!");
}
private void btFocusForm_Click(object sender, System.EventArgs e)
{
bool canFocus = txtFocusForm.CanFocus;
bool containsFocus = this.ContainsFocus;
bool focused = txtFocusForm.Focused;
MessageBox.Show("Textbox can focus: " + canFocus +
"\nForm children contain focus: " + containsFocus +
"\nTextbox has focus: " + focused);
txtFocusForm.Focus();
}
}
</source>
TextBox.MouseDown
<source lang="csharp">
using System; using System.Windows.Forms; public class TextBoxDragDropDemo : Form {
public TextBoxDragDropDemo()
{
InitializeComponent();
}
private void TextBox_MouseDown(object sender, MouseEventArgs e)
{
TextBox txt = (TextBox)sender;
txt.SelectAll();
txt.DoDragDrop(txt.Text, DragDropEffects.Copy);
}
private void TextBox_DragEnter(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(DataFormats.Text))
{
e.Effect = DragDropEffects.Copy;
}
else
{
e.Effect = DragDropEffects.None;
}
}
private void TextBox_DragDrop(object sender, DragEventArgs e)
{
TextBox txt = (TextBox)sender;
txt.Text = (string)e.Data.GetData(DataFormats.Text);
}
[STAThread]
public static void Main(string[] args)
{
Application.Run(new TextBoxDragDropDemo());
}
private System.Windows.Forms.TextBox TextBox2;
private System.Windows.Forms.TextBox TextBox1;
private void InitializeComponent()
{
this.TextBox2 = new System.Windows.Forms.TextBox();
this.TextBox1 = new System.Windows.Forms.TextBox();
this.SuspendLayout();
this.TextBox2.AllowDrop = true;
this.TextBox2.Location = new System.Drawing.Point(28, 129);
this.TextBox2.Multiline = true;
this.TextBox2.Size = new System.Drawing.Size(196, 77);
this.TextBox2.DragDrop += new System.Windows.Forms.DragEventHandler(this.TextBox_DragDrop);
this.TextBox2.DragEnter += new System.Windows.Forms.DragEventHandler(this.TextBox_DragEnter);
this.TextBox2.MouseDown += new System.Windows.Forms.MouseEventHandler(this.TextBox_MouseDown);
this.TextBox1.AllowDrop = true;
this.TextBox1.Location = new System.Drawing.Point(28, 36);
this.TextBox1.Multiline = true;
this.TextBox1.Size = new System.Drawing.Size(196, 77);
this.TextBox1.DragDrop += new System.Windows.Forms.DragEventHandler(this.TextBox_DragDrop);
this.TextBox1.DragEnter += new System.Windows.Forms.DragEventHandler(this.TextBox_DragEnter);
this.TextBox1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.TextBox_MouseDown);
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(292, 266);
this.Controls.Add(this.TextBox2);
this.Controls.Add(this.TextBox1);
this.ResumeLayout(false);
this.PerformLayout();
}
}
</source>
TextBox.Multiline
<source lang="csharp">
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class TextForm : System.Windows.Forms.Form
{
private System.Windows.Forms.Button btnPasswordDecoderRing;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.TextBox passwordBox;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.TextBox capsOnlyBox;
private System.Windows.Forms.Button btnGetMultiLineText;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox multiLineBox;
public TextForm()
{
InitializeComponent();
}
private void InitializeComponent()
{
this.capsOnlyBox = new System.Windows.Forms.TextBox();
this.multiLineBox = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.passwordBox = new System.Windows.Forms.TextBox();
this.btnGetMultiLineText = new System.Windows.Forms.Button();
this.btnPasswordDecoderRing = new System.Windows.Forms.Button();
this.label3 = new System.Windows.Forms.Label();
this.capsOnlyBox.CharacterCasing = System.Windows.Forms.CharacterCasing.Upper;
this.capsOnlyBox.Location = new System.Drawing.Point(14, 176);
this.capsOnlyBox.Size = new System.Drawing.Size(120, 20);
this.capsOnlyBox.TabIndex = 3;
this.multiLineBox.AcceptsReturn = true;
this.multiLineBox.AcceptsTab = true;
this.multiLineBox.Location = new System.Drawing.Point(152, 8);
this.multiLineBox.Multiline = true;
this.multiLineBox.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
this.multiLineBox.Size = new System.Drawing.Size(240, 104);
this.multiLineBox.TabIndex = 0;
this.multiLineBox.Text = "Get text from multiline textbox";
this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 10F);
this.label1.Location = new System.Drawing.Point(8, 8);
this.label1.Size = new System.Drawing.Size(136, 56);
this.label1.TabIndex = 1;
this.label1.Text = "this is a multiline text box";
this.label2.Font = new System.Drawing.Font("Comic Sans MS", 12F);
this.label2.Location = new System.Drawing.Point(14, 144);
this.label2.Size = new System.Drawing.Size(106, 24);
this.label2.TabIndex = 4;
this.label2.Text = "Caps only!!";
this.passwordBox.Location = new System.Drawing.Point(160, 176);
this.passwordBox.PasswordChar = "$";
this.passwordBox.Size = new System.Drawing.Size(232, 20);
this.passwordBox.TabIndex = 5;
this.passwordBox.Text = "password";
this.btnGetMultiLineText.Location = new System.Drawing.Point(13, 72);
this.btnGetMultiLineText.Size = new System.Drawing.Size(120, 32);
this.btnGetMultiLineText.TabIndex = 2;
this.btnGetMultiLineText.Text = "Get Text";
this.btnGetMultiLineText.Click += new System.EventHandler(this.btnGetMultiLineText_Click);
this.btnPasswordDecoderRing.Location = new System.Drawing.Point(280, 144);
this.btnPasswordDecoderRing.Size = new System.Drawing.Size(112, 24);
this.btnPasswordDecoderRing.TabIndex = 7;
this.btnPasswordDecoderRing.Text = "Decode Password";
this.btnPasswordDecoderRing.Click += new System.EventHandler(this.btnPasswordDecoderRing_Click);
this.label3.Font = new System.Drawing.Font("Comic Sans MS", 12F);
this.label3.Location = new System.Drawing.Point(152, 144);
this.label3.Size = new System.Drawing.Size(120, 24);
this.label3.TabIndex = 6;
this.label3.Text = "Password Box";
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(408, 221);
this.Controls.AddRange(new System.Windows.Forms.Control[] {this.btnPasswordDecoderRing,
this.label3,
this.passwordBox,
this.label2,
this.capsOnlyBox,
this.btnGetMultiLineText,
this.label1,
this.multiLineBox});
this.Text = "TextBox Types";
}
protected void btnPasswordDecoderRing_Click (object sender, System.EventArgs e)
{
MessageBox.Show(passwordBox.Text, "Your password is:");
}
protected void btnGetMultiLineText_Click (object sender, System.EventArgs e)
{
MessageBox.Show(multiLineBox.Text, "Here is your text");
}
public static void Main(string[] args)
{
Application.Run(new TextForm());
}
}
</source>
TextBox.PasswordChar
<source lang="csharp">
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class TextForm : System.Windows.Forms.Form
{
private System.Windows.Forms.Button btnPasswordDecoderRing;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.TextBox passwordBox;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.TextBox capsOnlyBox;
private System.Windows.Forms.Button btnGetMultiLineText;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox multiLineBox;
public TextForm()
{
InitializeComponent();
}
private void InitializeComponent()
{
this.capsOnlyBox = new System.Windows.Forms.TextBox();
this.multiLineBox = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.passwordBox = new System.Windows.Forms.TextBox();
this.btnGetMultiLineText = new System.Windows.Forms.Button();
this.btnPasswordDecoderRing = new System.Windows.Forms.Button();
this.label3 = new System.Windows.Forms.Label();
this.capsOnlyBox.CharacterCasing = System.Windows.Forms.CharacterCasing.Upper;
this.capsOnlyBox.Location = new System.Drawing.Point(14, 176);
this.capsOnlyBox.Size = new System.Drawing.Size(120, 20);
this.capsOnlyBox.TabIndex = 3;
this.multiLineBox.AcceptsReturn = true;
this.multiLineBox.AcceptsTab = true;
this.multiLineBox.Location = new System.Drawing.Point(152, 8);
this.multiLineBox.Multiline = true;
this.multiLineBox.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
this.multiLineBox.Size = new System.Drawing.Size(240, 104);
this.multiLineBox.TabIndex = 0;
this.multiLineBox.Text = "Get text from multiline textbox";
this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 10F);
this.label1.Location = new System.Drawing.Point(8, 8);
this.label1.Size = new System.Drawing.Size(136, 56);
this.label1.TabIndex = 1;
this.label1.Text = "this is a multiline text box";
this.label2.Font = new System.Drawing.Font("Comic Sans MS", 12F);
this.label2.Location = new System.Drawing.Point(14, 144);
this.label2.Size = new System.Drawing.Size(106, 24);
this.label2.TabIndex = 4;
this.label2.Text = "Caps only!!";
this.passwordBox.Location = new System.Drawing.Point(160, 176);
this.passwordBox.PasswordChar = "$";
this.passwordBox.Size = new System.Drawing.Size(232, 20);
this.passwordBox.TabIndex = 5;
this.passwordBox.Text = "password";
this.btnGetMultiLineText.Location = new System.Drawing.Point(13, 72);
this.btnGetMultiLineText.Size = new System.Drawing.Size(120, 32);
this.btnGetMultiLineText.TabIndex = 2;
this.btnGetMultiLineText.Text = "Get Text";
this.btnGetMultiLineText.Click += new System.EventHandler(this.btnGetMultiLineText_Click);
this.btnPasswordDecoderRing.Location = new System.Drawing.Point(280, 144);
this.btnPasswordDecoderRing.Size = new System.Drawing.Size(112, 24);
this.btnPasswordDecoderRing.TabIndex = 7;
this.btnPasswordDecoderRing.Text = "Decode Password";
this.btnPasswordDecoderRing.Click += new System.EventHandler(this.btnPasswordDecoderRing_Click);
this.label3.Font = new System.Drawing.Font("Comic Sans MS", 12F);
this.label3.Location = new System.Drawing.Point(152, 144);
this.label3.Size = new System.Drawing.Size(120, 24);
this.label3.TabIndex = 6;
this.label3.Text = "Password Box";
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(408, 221);
this.Controls.AddRange(new System.Windows.Forms.Control[] {this.btnPasswordDecoderRing,
this.label3,
this.passwordBox,
this.label2,
this.capsOnlyBox,
this.btnGetMultiLineText,
this.label1,
this.multiLineBox});
this.Text = "TextBox Types";
}
protected void btnPasswordDecoderRing_Click (object sender, System.EventArgs e)
{
MessageBox.Show(passwordBox.Text, "Your password is:");
}
protected void btnGetMultiLineText_Click (object sender, System.EventArgs e)
{
MessageBox.Show(multiLineBox.Text, "Here is your text");
}
public static void Main(string[] args)
{
Application.Run(new TextForm());
}
}
</source>
TextBox.ScrollBars
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms;
class NotepadCloneNoMenu: Form {
protected TextBox txtbox;
public static void Main()
{
Application.Run(new NotepadCloneNoMenu());
}
public NotepadCloneNoMenu()
{
Text = "Notepad Clone No Menu";
txtbox = new TextBox();
txtbox.Parent = this;
txtbox.Dock = DockStyle.Fill;
txtbox.BorderStyle = BorderStyle.None;
txtbox.Multiline = true;
txtbox.ScrollBars = ScrollBars.Both;
txtbox.AcceptsTab = true;
}
}
</source>
TextBox.SelectAll()
<source lang="csharp">
using System; using System.Windows.Forms; public class TextBoxDragDropDemo : Form {
public TextBoxDragDropDemo()
{
InitializeComponent();
}
private void TextBox_MouseDown(object sender, MouseEventArgs e)
{
TextBox txt = (TextBox)sender;
txt.SelectAll();
txt.DoDragDrop(txt.Text, DragDropEffects.Copy);
}
private void TextBox_DragEnter(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(DataFormats.Text))
{
e.Effect = DragDropEffects.Copy;
}
else
{
e.Effect = DragDropEffects.None;
}
}
private void TextBox_DragDrop(object sender, DragEventArgs e)
{
TextBox txt = (TextBox)sender;
txt.Text = (string)e.Data.GetData(DataFormats.Text);
}
[STAThread]
public static void Main(string[] args)
{
Application.Run(new TextBoxDragDropDemo());
}
private System.Windows.Forms.TextBox TextBox2;
private System.Windows.Forms.TextBox TextBox1;
private void InitializeComponent()
{
this.TextBox2 = new System.Windows.Forms.TextBox();
this.TextBox1 = new System.Windows.Forms.TextBox();
this.SuspendLayout();
this.TextBox2.AllowDrop = true;
this.TextBox2.Location = new System.Drawing.Point(28, 129);
this.TextBox2.Multiline = true;
this.TextBox2.Size = new System.Drawing.Size(196, 77);
this.TextBox2.DragDrop += new System.Windows.Forms.DragEventHandler(this.TextBox_DragDrop);
this.TextBox2.DragEnter += new System.Windows.Forms.DragEventHandler(this.TextBox_DragEnter);
this.TextBox2.MouseDown += new System.Windows.Forms.MouseEventHandler(this.TextBox_MouseDown);
this.TextBox1.AllowDrop = true;
this.TextBox1.Location = new System.Drawing.Point(28, 36);
this.TextBox1.Multiline = true;
this.TextBox1.Size = new System.Drawing.Size(196, 77);
this.TextBox1.DragDrop += new System.Windows.Forms.DragEventHandler(this.TextBox_DragDrop);
this.TextBox1.DragEnter += new System.Windows.Forms.DragEventHandler(this.TextBox_DragEnter);
this.TextBox1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.TextBox_MouseDown);
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(292, 266);
this.Controls.Add(this.TextBox2);
this.Controls.Add(this.TextBox1);
this.ResumeLayout(false);
this.PerformLayout();
}
}
</source>
TextBox.SelectedText
<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Windows.Forms; partial class Form1 : Form {
public Form1()
{
InitializeComponent();
}
private void showButton_Click(object sender, EventArgs e)
{
if (inputBox.SelectionLength == 0)
{
MessageBox.Show("You need to select something inside the text box first");
}
else
{
System.Text.StringBuilder builder = new System.Text.StringBuilder();
builder.Append(String.Format("The input box contains {0}\n", inputBox.Text));
builder.Append(String.Format("You have selected {0} characters, starting at {1}\n", inputBox.SelectionLength, inputBox.SelectionStart));
builder.Append(String.Format("The selection is {0}", inputBox.SelectedText));
MessageBox.Show(builder.ToString());
}
}
} partial class Form1 {
private void InitializeComponent()
{
this.inputBox = new System.Windows.Forms.TextBox();
this.showButton = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// inputBox
//
this.inputBox.Location = new System.Drawing.Point(16, 15);
this.inputBox.Name = "inputBox";
this.inputBox.Size = new System.Drawing.Size(421, 22);
this.inputBox.TabIndex = 0;
//
// showButton
//
this.showButton.Location = new System.Drawing.Point(311, 46);
this.showButton.Name = "showButton";
this.showButton.Size = new System.Drawing.Size(126, 27);
this.showButton.TabIndex = 1;
this.showButton.Text = "Show selection";
this.showButton.Click += new System.EventHandler(this.showButton_Click);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 15);
this.ClientSize = new System.Drawing.Size(449, 87);
this.Controls.Add(this.showButton);
this.Controls.Add(this.inputBox);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
this.PerformLayout();
}
private System.Windows.Forms.TextBox inputBox;
private System.Windows.Forms.Button showButton;
} public class TextBoxSelection {
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
</source>
TextBox.SelectionLength
<source lang="csharp"> using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; using System.Text; public class Form1 : System.Windows.Forms.Form {
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.GroupBox groupBox2;
private System.Windows.Forms.Label label2;
public Form1() {
this.textBox1 = new System.Windows.Forms.TextBox();
this.textBox2 = new System.Windows.Forms.TextBox();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.label1 = new System.Windows.Forms.Label();
this.groupBox2 = new System.Windows.Forms.GroupBox();
this.label2 = new System.Windows.Forms.Label();
this.groupBox1.SuspendLayout();
this.groupBox2.SuspendLayout();
this.SuspendLayout();
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(16, 24);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(168, 20);
this.textBox1.TabIndex = 5;
this.textBox1.Text = "";
this.textBox1.KeyDown += new System.Windows.Forms.KeyEventHandler(this.textBox1_KeyDown);
//
// textBox2
//
this.textBox2.Location = new System.Drawing.Point(16, 24);
this.textBox2.Name = "textBox2";
this.textBox2.Size = new System.Drawing.Size(168, 20);
this.textBox2.TabIndex = 6;
this.textBox2.Text = "";
this.textBox2.KeyDown += new System.Windows.Forms.KeyEventHandler(this.textBox2_KeyDown);
//
// groupBox1
//
this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
this.label1,
this.textBox1});
this.groupBox1.Location = new System.Drawing.Point(8, 8);
this.groupBox1.Name = "groupBox1";
this.groupBox1.TabIndex = 7;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "Key Monitor";
//
// label1
//
this.label1.Location = new System.Drawing.Point(16, 64);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(168, 20);
this.label1.TabIndex = 6;
//
// groupBox2
//
this.groupBox2.Controls.AddRange(new System.Windows.Forms.Control[] {
this.textBox2,
this.label2});
this.groupBox2.Location = new System.Drawing.Point(8, 120);
this.groupBox2.Name = "groupBox2";
this.groupBox2.TabIndex = 8;
this.groupBox2.TabStop = false;
this.groupBox2.Text = "Keys Enumeration";
//
// label2
//
this.label2.Location = new System.Drawing.Point(16, 64);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(168, 20);
this.label2.TabIndex = 9;
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(216, 229);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.groupBox2,
this.groupBox1});
this.groupBox1.ResumeLayout(false);
this.groupBox2.ResumeLayout(false);
this.ResumeLayout(false);
}
[STAThread]
static void Main() {
Application.Run(new Form1());
}
private void textBox1_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e) {
label1.Text = Convert.ToString(e.KeyValue);
}
private void textBox2_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e) {
if (e.Shift) Console.WriteLine("Shift, ");
if (e.Alt) Console.WriteLine("Alt, ");
if (e.Control) Console.WriteLine("Ctrl, ");
if (e.KeyCode == Keys.W || e.KeyCode == Keys.R ) {
Console.WriteLine("W R ");
} else if (e.KeyCode == Keys.Escape && e.Modifiers == (Keys.Shift | Keys.Alt)) {
Console.WriteLine("Escape");
} else if (e.KeyCode == Keys.C && e.Modifiers == (Keys.Alt | Keys.Control)) {
Console.WriteLine("s");
textBox2.SelectedText = "";
textBox2.SelectionLength = 0;
} else {
Console.WriteLine(Convert.ToString(e.KeyData));
}
}
}
</source>
TextBox.TextChanged
<source lang="csharp"> 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());
}
}
</source>
TextBox.Validated
<source lang="csharp">
using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; public partial class Form1 : Form {
public Form1()
{
InitializeComponent();
}
private void numberBox_Validating(object sender, CancelEventArgs e)
{
try
{
int numberEntered = int.Parse(numberBox.Text);
if (numberEntered < 1 || numberEntered > 10)
{
e.Cancel = true;
MessageBox.Show("You have to enter a number between 1 and 10");
}
}
catch (FormatException)
{
e.Cancel = true;
MessageBox.Show("You need to enter an integer");
}
}
private void numberBox_Validated(object sender, EventArgs e)
{
MessageBox.Show("Well done, you managed to enter a valid number");
}
private void okButton_Click(object sender, EventArgs e)
{
this.Close();
}
} partial class Form1 {
private void InitializeComponent()
{
this.numberBox = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.okButton = new System.Windows.Forms.Button();
this.maskedTextBox1 = new System.Windows.Forms.MaskedTextBox();
this.SuspendLayout();
//
// numberBox
//
this.numberBox.Location = new System.Drawing.Point(253, 15);
this.numberBox.Margin = new System.Windows.Forms.Padding(4, 4, 4, 4);
this.numberBox.Name = "numberBox";
this.numberBox.Size = new System.Drawing.Size(57, 22);
this.numberBox.TabIndex = 0;
this.numberBox.Validated += new System.EventHandler(this.numberBox_Validated);
this.numberBox.Validating += new System.ruponentModel.CancelEventHandler(this.numberBox_Validating);
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(16, 18);
this.label1.Margin = new System.Windows.Forms.Padding(4, 0, 4, 0);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(201, 16);
this.label1.TabIndex = 1;
this.label1.Text = "Enter a number between 1 and 10";
//
// okButton
//
this.okButton.Location = new System.Drawing.Point(335, 11);
this.okButton.Margin = new System.Windows.Forms.Padding(4, 4, 4, 4);
this.okButton.Name = "okButton";
this.okButton.Size = new System.Drawing.Size(100, 28);
this.okButton.TabIndex = 2;
this.okButton.Text = "OK";
this.okButton.Click += new System.EventHandler(this.okButton_Click);
//
// maskedTextBox1
//
this.maskedTextBox1.Location = new System.Drawing.Point(0, 0);
this.maskedTextBox1.Name = "maskedTextBox1";
this.maskedTextBox1.Size = new System.Drawing.Size(100, 23);
this.maskedTextBox1.TabIndex = 3;
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 16F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(453, 246);
this.Controls.Add(this.maskedTextBox1);
this.Controls.Add(this.okButton);
this.Controls.Add(this.label1);
this.Controls.Add(this.numberBox);
this.Margin = new System.Windows.Forms.Padding(4, 4, 4, 4);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
this.PerformLayout();
}
private System.Windows.Forms.TextBox numberBox;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Button okButton;
private System.Windows.Forms.MaskedTextBox maskedTextBox1;
} public class TextBoxValidation {
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
</source>
TextBox.Validating
<source lang="csharp"> using System; using System.Windows.Forms; class GetValueFromTextBox : Form {
private Label label1;
private TextBox textBox1;
private Button button1;
public GetValueFromTextBox()
{
this.label1 = new Label();
this.textBox1 = new TextBox();
this.button1 = new Button();
this.SuspendLayout();
this.label1.Location = new System.Drawing.Point(16, 36);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(128, 16);
this.label1.TabIndex = 0;
this.label1.Text = "Please enter your name:";
this.textBox1.Location = new System.Drawing.Point(152, 32);
this.textBox1.Name = "textBox1";
this.textBox1.TabIndex = 1;
this.textBox1.Text = "";
this.button1.Location = new System.Drawing.Point(109, 80);
this.button1.Name = "button1";
this.button1.TabIndex = 2;
this.button1.Text = "Enter";
this.button1.Click += new System.EventHandler(this.button1_Click);
this.ClientSize = new System.Drawing.Size(292, 126);
this.Controls.Add(this.button1);
this.Controls.Add(this.textBox1);
this.Controls.Add(this.label1);
this.Name = "form1";
this.Text = "";
this.ResumeLayout(false);
}
private void button1_Click(object sender, System.EventArgs e)
{
Console.WriteLine(textBox1.Text);
MessageBox.Show(textBox1.Text);
}
[STAThread]
public static void Main()
{
Application.EnableVisualStyles();
Application.Run(new GetValueFromTextBox());
}
}
</source>
