TextBox.OnTextInputStart Method

Called before the TextInputStart event occurs.

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

Syntax

'Declaration
Protected Overrides Sub OnTextInputStart ( _
    e As TextCompositionEventArgs _
)
protected override void OnTextInputStart(
    TextCompositionEventArgs e
)

Parameters

Remarks

The OnTextInputStart method is called before any event handler for the TextInputStart 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.

Notes to Inheritors

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

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.