KeyPressEventArgs.KeyChar Property

Gets or sets the character corresponding to the key pressed.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public char KeyChar { get; set; }

Property Value

Type: System.Char
The ASCII character that is composed. For example, if the user presses SHIFT + K, this property returns an uppercase K.

Use the KeyChar property to sample keystrokes at run time and to modify keystrokes under special run-time circumstances. For example, you can use KeyChar to disable non-numeric keypresses when the user enters a ZIP code, change all alphabetical keypresses to uppercase in a data entry field, or monitor the keyboard or other key input device for specific key combinations.

You can get or set the following keys:

  • a-z, A-Z.

  • CTRL.

  • Punctuation marks.

  • Number keys, both across the top of the keyboard and on the numeric keypad.

  • ENTER.

You cannot get or set the following keys:

  • The TAB key.

  • INSERT and DELETE.

  • HOME.

  • END.

  • PAGE UP and PAGE DOWN.

  • F1-F2.

  • ALT.

  • Arrow keys.

NoteNote

For information about how to detect any of the non-character keys mentioned above, see the KeyEventArgs class.

The following example creates a TextBox control. The keypressed method uses the KeyChar property to check whether the ENTER key 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());
    }
}

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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