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ButtonBase.OnAccessKey Method

Responds when the AccessKey for this control is called.

Namespace:  System.Windows.Controls.Primitives
Assembly:  PresentationFramework (in PresentationFramework.dll)

protected override void OnAccessKey(
	AccessKeyEventArgs e
)
You cannot use methods in XAML.

Parameters

e
Type: System.Windows.Input.AccessKeyEventArgs

The event data for the AccessKeyPressed event.

If IsMultiple is true, this method calls the base implementation, which gives this control focus. Otherwise, this method raises the Click event.

This example shows how to create a control that has an access key and supports text wrapping. The example uses a Label control to illustrate these concepts.

Add Text Wrapping to Your Label

The Label control does not support text wrapping. If you need a label that wraps across multiple lines, you can nest another element that does support text wrapping and put the element inside the label. The following example shows how to use a TextBlock to make a label that wraps several lines of text.

<Label Width="200" HorizontalAlignment="Left">
  <TextBlock TextWrapping="WrapWithOverflow">
    A long piece of text that requires text wrapping
    goes here.
  </TextBlock>
</Label>

Add an Access Key and Text Wrapping to Your Label

If you need a Label that has an access key (mnemonic), use the AccessText element that is inside the Label.

Controls such as Label, Button, RadioButton, CheckBox, MenuItem, TabItem, Expander, and GroupBox have default control templates. These templates contain a ContentPresenter. One of the properties that you can set on the ContentPresenter is RecognizesAccessKey="true", which you can use to specify an access key for the control.

The following example shows how to create a Label that has an access key and supports text wrapping. To enable text wrapping, the example sets the TextWrapping property and uses an underline character to specify the access key. (The character that immediately follows the underline character is the access key.)

<TextBox Name="textBox1" Width="50" Height="20"/>
<Label Width="200" HorizontalAlignment="Left"
       Target="{Binding ElementName=textBox1}">
  <AccessText TextWrapping="WrapWithOverflow">
    _Another long piece of text that requires text wrapping
    goes here.
  </AccessText>
</Label>

For the complete sample, see Label Sample.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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

.NET Framework

Supported in: 3.5, 3.0

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