ContextCallback Delegate (System.Threading)

ContextCallback Delegate

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This page is specific to

Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:

.NET Framework Class Library

ContextCallback Delegate

Represents a method to be called within a new context.

Namespace: System.Threading
Assembly: mscorlib (in mscorlib.dll)

Syntax

Visual Basic (Declaration)

<ComVisibleAttribute(True)> _
Public Delegate Sub ContextCallback ( _
    state As Object _
)

Visual Basic (Usage)

Dim instance As New ContextCallback(AddressOf HandlerMethod)

[ComVisibleAttribute(true)]
public delegate void ContextCallback(
    Object state
)

Visual C++

[ComVisibleAttribute(true)]
public delegate void ContextCallback(
    Object^ state
)

JScript

JScript does not support delegates.

Parameters

state: Type: System..::.Object
An object containing information to be used by the callback method each time it executes.

Remarks

ContextCallback is used by the ExecutionContext..::.Run and the SecurityContext..::.Run methods. ContextCallback represents the method to be run in the provided context. Upon completion of the method execution, the context is restored to its previous state.

Create the delegate by passing your callback method to the ContextCallback constructor. Your method must have the signature shown here.

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

Version Information

.NET Framework

Supported in: 3.5, 3.0, 2.0

Reference

System.Threading Namespace