RichTextBox.OnKeyUp Method
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Called before the KeyUp event occurs.
Namespace: System.Windows.Controls
Assembly: System.Windows (in System.Windows.dll)
Syntax
'Declaration
Protected Overrides Sub OnKeyUp ( _
e As KeyEventArgs _
)
protected override void OnKeyUp(
KeyEventArgs e
)
Parameters
- e
Type: System.Windows.Input.KeyEventArgs
The data for the event.
Remarks
The OnKeyUp method is called before any event handler for the KeyUp event is called. This method allows derived classes to handle the KeyUp event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
The RichTextBox implementation marks the KeyUp event as handled by setting the Handled property of the event data to true.
Notes to Inheritors
If you override the OnKeyUp method, you can prevent registered delegates from receiving events by setting Handled to true. For more information about routed events and the Handled property, see Events Overview for Silverlight.
Version Information
Silverlight
Supported in: 5, 4
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.