Control.OnTextInputStart Method

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Called before the TextInputStart event occurs.

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


Protected Overridable Sub OnTextInputStart ( _
    e As TextCompositionEventArgs _
protected virtual void OnTextInputStart(
    TextCompositionEventArgs e



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

This implementation does not change the handled state (the Handled property) of the TextInputStart event data.

Notes to Inheritors

When overriding OnTextInputStart in a derived class, be sure to call the base class’s OnTextInputStart method so that registered delegates receive the event.

Version Information


Supported in: 5, 4

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1


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