AutoCompleteBox.OnKeyDown Method


Provides handling for the KeyDown event.

Namespace:  System.Windows.Controls
Assembly:  System.Windows.Controls.Input (in System.Windows.Controls.Input.dll)

protected override void OnKeyDown(
	KeyEventArgs e


Type: System.Windows.Input.KeyEventArgs
A KeyEventArgs that contains the event data.

The OnKeyDown method is called before any event handler for the KeyDown event is called. This method allows derived classes to handle the KeyDown event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

This implementation sets the KeyEventArgs.Handled property of the event data to true in the following situations:

Notes to Inheritors

If you override OnKeyDown, you can prevent registered delegates from receiving events by setting KeyEventArgs.Handled to true. For more information about routed events and the KeyEventArgs.Handled property, see Events Overview for Silverlight.


Supported in: 5, 4, 3

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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