Článek
11/18/2011

Control.OnTextInputStart Method

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Called before the TextInputStart event occurs.

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

Syntax

'Declaration
Protected Overridable Sub OnTextInputStart ( _
    e As TextCompositionEventArgs _
)

protected virtual void OnTextInputStart(
    TextCompositionEventArgs e
)

Parameters

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

Remarks

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

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.

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