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TextBoxBase.DeclareChangeBlock Method

Creates a change block.

Namespace:  System.Windows.Controls.Primitives
Assembly:  PresentationFramework (in PresentationFramework.dll)
public IDisposable DeclareChangeBlock()

Return Value

Type: System.IDisposable
An IDisposable object that refers to a new change block.

A change block logically groups multiple changes into a single undo unit. A change block is created by calling the DeclareChangeBlock method. Calling the BeginChange method causes all subsequent changes to be included in the specified change block until a corresponding call to the EndChange method is made.

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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