Csharp/CSharp Tutorial/GUI Windows Forms/NumericUpDown — различия между версиями

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Текущая версия на 12:15, 26 мая 2010

Get value from NumericUpDown

using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class UpDownForm : System.Windows.Forms.Form
{
  private System.ruponentModel.Container components = null;
  private System.Windows.Forms.Label lblCurrSel;
  private System.Windows.Forms.Button btnGetSelections;
  private System.Windows.Forms.Label label2;
  private System.Windows.Forms.Label label1;
  private System.Windows.Forms.NumericUpDown numericUpDown;
  private System.Windows.Forms.DomainUpDown domainUpDown;
  public UpDownForm()
  {
    InitializeComponent();
    domainUpDown.SelectedIndex = 2;
  }
  protected override void Dispose( bool disposing )
  {
    if( disposing )
    {
      if (components != null) 
      {
        components.Dispose();
      }
    }
    base.Dispose( disposing );
  }
  private void InitializeComponent()
  {
    this.label1 = new System.Windows.Forms.Label();
    this.label2 = new System.Windows.Forms.Label();
    this.numericUpDown = new System.Windows.Forms.NumericUpDown();
    this.domainUpDown = new System.Windows.Forms.DomainUpDown();
    this.btnGetSelections = new System.Windows.Forms.Button();
    this.lblCurrSel = new System.Windows.Forms.Label();
    ((System.ruponentModel.ISupportInitialize)(this.numericUpDown)).BeginInit();
    this.SuspendLayout();
    // 
    // label1
    // 
    this.label1.Font = new System.Drawing.Font("Verdana", 12F);
    this.label1.Location = new System.Drawing.Point(8, 24);
    this.label1.Name = "label1";
    this.label1.Size = new System.Drawing.Size(224, 32);
    this.label1.TabIndex = 2;
    this.label1.Text = "Domain UpDown Control";
    // 
    // label2
    // 
    this.label2.Font = new System.Drawing.Font("Verdana", 12F);
    this.label2.Location = new System.Drawing.Point(8, 80);
    this.label2.Name = "label2";
    this.label2.Size = new System.Drawing.Size(232, 32);
    this.label2.TabIndex = 3;
    this.label2.Text = "Numeric UpDown Control";
    // 
    // numericUpDown
    // 
    this.numericUpDown.Location = new System.Drawing.Point(264, 80);
    this.numericUpDown.Maximum = new System.Decimal(new int[] {
                                    5000,
                                    0,
                                    0,
                                    0});
    this.numericUpDown.Name = "numericUpDown";
    this.numericUpDown.Size = new System.Drawing.Size(168, 20);
    this.numericUpDown.TabIndex = 1;
    this.numericUpDown.ThousandsSeparator = true;
    this.numericUpDown.UpDownAlign = System.Windows.Forms.LeftRightAlignment.Left;
    this.numericUpDown.ValueChanged += new System.EventHandler(this.numericUpDown_ValueChanged);
    // 
    // domainUpDown
    // 
    this.domainUpDown.Items.Add("A");
    this.domainUpDown.Items.Add("B");
    this.domainUpDown.Items.Add("C");
    this.domainUpDown.Items.Add("D");
    this.domainUpDown.Location = new System.Drawing.Point(264, 24);
    this.domainUpDown.Name = "domainUpDown";
    this.domainUpDown.Size = new System.Drawing.Size(168, 20);
    this.domainUpDown.Sorted = true;
    this.domainUpDown.TabIndex = 0;
    this.domainUpDown.Text = "domainUpDown1";
    this.domainUpDown.Wrap = true;
    this.domainUpDown.SelectedItemChanged += new System.EventHandler(this.domainUpDown_SelectedItemChanged);
    // 
    // btnGetSelections
    // 
    this.btnGetSelections.Location = new System.Drawing.Point(16, 136);
    this.btnGetSelections.Name = "btnGetSelections";
    this.btnGetSelections.Size = new System.Drawing.Size(136, 24);
    this.btnGetSelections.TabIndex = 4;
    this.btnGetSelections.Text = "Get Current Selections";
    this.btnGetSelections.Click += new System.EventHandler(this.btnGetSelections_Click);
    // 
    // lblCurrSel
    // 
    this.lblCurrSel.BackColor = System.Drawing.Color.Linen;
    this.lblCurrSel.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
    this.lblCurrSel.Location = new System.Drawing.Point(176, 120);
    this.lblCurrSel.Name = "lblCurrSel";
    this.lblCurrSel.Size = new System.Drawing.Size(256, 48);
    this.lblCurrSel.TabIndex = 5;
    // 
    // UpDownForm
    // 
    this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
    this.ClientSize = new System.Drawing.Size(448, 181);
    this.Controls.Add(this.lblCurrSel);
    this.Controls.Add(this.btnGetSelections);
    this.Controls.Add(this.label2);
    this.Controls.Add(this.label1);
    this.Controls.Add(this.numericUpDown);
    this.Controls.Add(this.domainUpDown);
    this.Name = "UpDownForm";
    this.Text = "Spin Controls";
    ((System.ruponentModel.ISupportInitialize)(this.numericUpDown)).EndInit();
    this.ResumeLayout(false);
  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new UpDownForm());
  }
  protected void numericUpDown_ValueChanged (object sender, System.EventArgs e)
  {
    this.Text = "You changed the numeric value...";
  }
  protected void domainUpDown_SelectedItemChanged (object sender, System.EventArgs e)
  {
    this.Text = "You changed the string value...";
  }
  protected void btnGetSelections_Click (object sender, System.EventArgs e)
  {
    // Get info from updowns...
    lblCurrSel.Text = string.Format("String: {0}\nNumber: {1}", domainUpDown.Text, numericUpDown.Value);
  }
}

NumericUpDown: set value, Minimum, Maximum, Increment, Decimal places, Readonly, TextAlign

using System;
using System.Drawing;
using System.Windows.Forms;
public class NumericUpDowns : Form
{
  NumericUpDown nupdwn;
  public NumericUpDowns()
  {
    Size = new Size(480,580);
    nupdwn = new NumericUpDown();
    nupdwn.Parent = this;
    nupdwn.Location = new Point(50, 50);
    nupdwn.Size = new Size(60,20);
    nupdwn.Value = 1;
    nupdwn.Minimum = -10;
    nupdwn.Maximum = 10;
    nupdwn.Increment = .25m;    //  decimal
    nupdwn.DecimalPlaces = 2;
    nupdwn.ReadOnly = true;
    nupdwn.TextAlign = HorizontalAlignment.Right;
    nupdwn.ValueChanged += new EventHandler(nupdwn_OnValueChanged);
  }  
  private void nupdwn_OnValueChanged(object sender, EventArgs e)
  {
    Console.WriteLine(nupdwn.Value);
  }
  static void Main() 
  {
    Application.Run(new NumericUpDowns());
  }
}

NumericUpDown validated event

using System;
using System.ruponentModel;
using System.Drawing;
using System.Windows.Forms;
using System.IO;
using System.Text;
class DialogValid : System.Windows.Forms.Form
{
    private Button okButton;
    private Button cancelButton;
    private NumericUpDown num;
    public decimal Num {
        get { return num.Value; }
        set { num.Value = value;    }
    }
    void OnValidating(Object sender, CancelEventArgs e)
    {
        MessageBox.Show("NumericUpDown is validating");
    } 
    void OnValid(Object sender,EventArgs e)
    {
        MessageBox.Show("NumericUpDown is valid");
    } 
    public DialogValid()
    {
        Size = new Size(400,100);
        FormBorderStyle = FormBorderStyle.FixedDialog;
        Text = "Dialog test";
        okButton = new Button();        
        okButton.DialogResult = DialogResult.OK;
        okButton.Location = new Point(20,28);
        okButton.Size = new Size(80,25);
        okButton.Text = "OK";
        Controls.Add(okButton);
        cancelButton = new Button();
        cancelButton.Location = new Point(300,28);
        cancelButton.Size = new Size(80,25);
        cancelButton.Text = "Cancel";
        cancelButton.DialogResult = DialogResult.Cancel;
        Controls.Add(cancelButton);
        Label l = new Label();
        l.Text = "NumericUpDown";
        l.Location = new Point(20,5);
        l.Size = new Size(120,25);
        Controls.Add(l);
        num = new NumericUpDown();
        num.Location = new Point(140,5);
        num.Size = new Size(80,25);
        num.Minimum = (decimal)10.0;
        num.Maximum = (decimal)100.0;
        num.Value = (decimal)10.0;
        
        num.Validating+=new CancelEventHandler(OnValidating);
        num.Validated+=new EventHandler(OnValid);
        Controls.Add(num);
    }
}
public class NumericUpDownValidationEvent{
    public static void Main()
    {
        DialogValid dlg = new DialogValid();
        DialogResult r = dlg.ShowDialog();
        
        Console.WriteLine(dlg.Num);
    }
}

NumericUpDown validating event

using System;
using System.ruponentModel;
using System.Drawing;
using System.Windows.Forms;
using System.IO;
using System.Text;
class DialogValid : System.Windows.Forms.Form
{
    private Button okButton;
    private Button cancelButton;
    private NumericUpDown num;
    public decimal Num {
        get { return num.Value; }
        set { num.Value = value;    }
    }
    void OnValidating(Object sender, CancelEventArgs e)
    {
        MessageBox.Show("NumericUpDown is validating");
    } 
    void OnValid(Object sender,EventArgs e)
    {
        MessageBox.Show("NumericUpDown is valid");
    } 
    public DialogValid()
    {
        Size = new Size(400,100);
        FormBorderStyle = FormBorderStyle.FixedDialog;
        Text = "Dialog test";
        okButton = new Button();        
        okButton.DialogResult = DialogResult.OK;
        okButton.Location = new Point(20,28);
        okButton.Size = new Size(80,25);
        okButton.Text = "OK";
        Controls.Add(okButton);
        cancelButton = new Button();
        cancelButton.Location = new Point(300,28);
        cancelButton.Size = new Size(80,25);
        cancelButton.Text = "Cancel";
        cancelButton.DialogResult = DialogResult.Cancel;
        Controls.Add(cancelButton);
        Label l = new Label();
        l.Text = "NumericUpDown";
        l.Location = new Point(20,5);
        l.Size = new Size(120,25);
        Controls.Add(l);
        num = new NumericUpDown();
        num.Location = new Point(140,5);
        num.Size = new Size(80,25);
        num.Minimum = (decimal)10.0;
        num.Maximum = (decimal)100.0;
        num.Value = (decimal)10.0;
        
        num.Validating+=new CancelEventHandler(OnValidating);
        num.Validated+=new EventHandler(OnValid);
        Controls.Add(num);
    }
}
public class NumericUpDownValidationEvent{
    public static void Main()
    {
        DialogValid dlg = new DialogValid();
        DialogResult r = dlg.ShowDialog();
        
        Console.WriteLine(dlg.Num);
    }
}

NumericUpDown: value changed event

using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class UpDownForm : System.Windows.Forms.Form
{
  private System.ruponentModel.Container components = null;
  private System.Windows.Forms.Label lblCurrSel;
  private System.Windows.Forms.Button btnGetSelections;
  private System.Windows.Forms.Label label2;
  private System.Windows.Forms.Label label1;
  private System.Windows.Forms.NumericUpDown numericUpDown;
  private System.Windows.Forms.DomainUpDown domainUpDown;
  public UpDownForm()
  {
    InitializeComponent();
    domainUpDown.SelectedIndex = 2;
  }
  protected override void Dispose( bool disposing )
  {
    if( disposing )
    {
      if (components != null) 
      {
        components.Dispose();
      }
    }
    base.Dispose( disposing );
  }
  private void InitializeComponent()
  {
    this.label1 = new System.Windows.Forms.Label();
    this.label2 = new System.Windows.Forms.Label();
    this.numericUpDown = new System.Windows.Forms.NumericUpDown();
    this.domainUpDown = new System.Windows.Forms.DomainUpDown();
    this.btnGetSelections = new System.Windows.Forms.Button();
    this.lblCurrSel = new System.Windows.Forms.Label();
    ((System.ruponentModel.ISupportInitialize)(this.numericUpDown)).BeginInit();
    this.SuspendLayout();
    // 
    // label1
    // 
    this.label1.Font = new System.Drawing.Font("Verdana", 12F);
    this.label1.Location = new System.Drawing.Point(8, 24);
    this.label1.Name = "label1";
    this.label1.Size = new System.Drawing.Size(224, 32);
    this.label1.TabIndex = 2;
    this.label1.Text = "Domain UpDown Control";
    // 
    // label2
    // 
    this.label2.Font = new System.Drawing.Font("Verdana", 12F);
    this.label2.Location = new System.Drawing.Point(8, 80);
    this.label2.Name = "label2";
    this.label2.Size = new System.Drawing.Size(232, 32);
    this.label2.TabIndex = 3;
    this.label2.Text = "Numeric UpDown Control";
    // 
    // numericUpDown
    // 
    this.numericUpDown.Location = new System.Drawing.Point(264, 80);
    this.numericUpDown.Maximum = new System.Decimal(new int[] {
                                    5000,
                                    0,
                                    0,
                                    0});
    this.numericUpDown.Name = "numericUpDown";
    this.numericUpDown.Size = new System.Drawing.Size(168, 20);
    this.numericUpDown.TabIndex = 1;
    this.numericUpDown.ThousandsSeparator = true;
    this.numericUpDown.UpDownAlign = System.Windows.Forms.LeftRightAlignment.Left;
    this.numericUpDown.ValueChanged += new System.EventHandler(this.numericUpDown_ValueChanged);
    // 
    // domainUpDown
    // 
    this.domainUpDown.Items.Add("A");
    this.domainUpDown.Items.Add("B");
    this.domainUpDown.Items.Add("C");
    this.domainUpDown.Items.Add("D");
    this.domainUpDown.Location = new System.Drawing.Point(264, 24);
    this.domainUpDown.Name = "domainUpDown";
    this.domainUpDown.Size = new System.Drawing.Size(168, 20);
    this.domainUpDown.Sorted = true;
    this.domainUpDown.TabIndex = 0;
    this.domainUpDown.Text = "domainUpDown1";
    this.domainUpDown.Wrap = true;
    this.domainUpDown.SelectedItemChanged += new System.EventHandler(this.domainUpDown_SelectedItemChanged);
    // 
    // btnGetSelections
    // 
    this.btnGetSelections.Location = new System.Drawing.Point(16, 136);
    this.btnGetSelections.Name = "btnGetSelections";
    this.btnGetSelections.Size = new System.Drawing.Size(136, 24);
    this.btnGetSelections.TabIndex = 4;
    this.btnGetSelections.Text = "Get Current Selections";
    this.btnGetSelections.Click += new System.EventHandler(this.btnGetSelections_Click);
    // 
    // lblCurrSel
    // 
    this.lblCurrSel.BackColor = System.Drawing.Color.Linen;
    this.lblCurrSel.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
    this.lblCurrSel.Location = new System.Drawing.Point(176, 120);
    this.lblCurrSel.Name = "lblCurrSel";
    this.lblCurrSel.Size = new System.Drawing.Size(256, 48);
    this.lblCurrSel.TabIndex = 5;
    // 
    // UpDownForm
    // 
    this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
    this.ClientSize = new System.Drawing.Size(448, 181);
    this.Controls.Add(this.lblCurrSel);
    this.Controls.Add(this.btnGetSelections);
    this.Controls.Add(this.label2);
    this.Controls.Add(this.label1);
    this.Controls.Add(this.numericUpDown);
    this.Controls.Add(this.domainUpDown);
    this.Name = "UpDownForm";
    this.Text = "Spin Controls";
    ((System.ruponentModel.ISupportInitialize)(this.numericUpDown)).EndInit();
    this.ResumeLayout(false);
  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new UpDownForm());
  }
  protected void numericUpDown_ValueChanged (object sender, System.EventArgs e)
  {
    this.Text = "You changed the numeric value...";
  }
  protected void domainUpDown_SelectedItemChanged (object sender, System.EventArgs e)
  {
    this.Text = "You changed the string value...";
  }
  protected void btnGetSelections_Click (object sender, System.EventArgs e)
  {
    // Get info from updowns...
    lblCurrSel.Text = string.Format("String: {0}\nNumber: {1}", domainUpDown.Text, numericUpDown.Value);
  }
}

NumericUpDown Value changed event handler

using System;
using System.Drawing;
using System.Windows.Forms;
public class NumericUpDowns : Form
{
  NumericUpDown nupdwn;
  public NumericUpDowns()
  {
    Size = new Size(480,580);
    nupdwn = new NumericUpDown();
    nupdwn.Parent = this;
    nupdwn.Location = new Point(50, 50);
    nupdwn.Size = new Size(60,20);
    nupdwn.Value = 1;
    nupdwn.Minimum = -10;
    nupdwn.Maximum = 10;
    nupdwn.Increment = .25m;    //  decimal
    nupdwn.DecimalPlaces = 2;
    nupdwn.ReadOnly = true;
    nupdwn.TextAlign = HorizontalAlignment.Right;
    nupdwn.ValueChanged += new EventHandler(nupdwn_OnValueChanged);
  }  
  private void nupdwn_OnValueChanged(object sender, EventArgs e)
  {
    Console.WriteLine(nupdwn.Value);
  }
  static void Main() 
  {
    Application.Run(new NumericUpDowns());
  }
}
Источник — «http://nfex.ru/index.php?title=Csharp/CSharp_Tutorial/GUI_Windows_Forms/NumericUpDown&oldid=5446»