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Handled Property
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KeyPressEventArgs.Handled Property

Gets or sets a value indicating whether the KeyPress event was handled.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

public bool Handled { get; set; }
/** @property */
public boolean get_Handled ()

/** @property */
public void set_Handled (boolean value)

public function get Handled () : boolean

public function set Handled (value : boolean)

Not applicable.

Property Value

true if the event is handled; otherwise, false.

If the event is not handled, it will be sent to the operating system for default processing. Set Handled to true to cancel the KeyPress event.

The following example creates a TextBox control. The keypressed method uses the KeyChar property to check whether the ENTER key is pressed. If the ENTER key is pressed, the Handled property is set to true, which indicates the event is handled.


using System;
using System.Windows.Forms;

public class Form1: Form
{
    public Form1()
    {
        // Create a TextBox control.
        TextBox tb = new TextBox();
        this.Controls.Add(tb);
        tb.KeyPress += new KeyPressEventHandler(keypressed);
    }

    private void keypressed(Object o, KeyPressEventArgs e)
    {
        // The keypressed method uses the KeyChar property to check 
        // whether the ENTER key is pressed. 

        // If the ENTER key is pressed, the Handled property is set to true, 
        // to indicate the event is handled.
        if (e.KeyChar == (char)Keys.Return)
        {
            e.Handled = true;
        }
    }

    public static void Main()
    {
        Application.Run(new Form1());
    }
}

import System.*;
import System.Windows.Forms.*;

public class Form1 extends Form
{
    public Form1()
    {
        // Create a TextBox control.
        TextBox tb = new TextBox();
        this.get_Controls().Add(tb);
        tb.add_KeyPress(new KeyPressEventHandler(KeyPressed));
    } //Form1

    void KeyPressed(Object o, KeyPressEventArgs e)
    {
        // The keypressed method uses the KeyChar property to check 
        // whether the ENTER key is pressed. 
        // If the ENTER key is pressed, the Handled property is set to true, 
        // to indicate the event is handled.
        if (e.get_KeyChar() == (char)(13)) {
            e.set_Handled(true);
        }
    } // KeyPressed

    public static void main(String[] args)
    {
        Application.Run(new Form1());
    } //main
} //Form1

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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