Artigo
11/18/2011

TextBox.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)

Syntax

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

protected override void OnTextInputStart(
    TextCompositionEventArgs e
)

Parameters

e
Type: System.Windows.Input.TextCompositionEventArgs
Provides data about the event.

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.

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