SuppressFlow Method

ExecutionContext.SuppressFlow Method

Suppresses the flow of the execution context across asynchronous threads.

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

[SecurityPermissionAttribute(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.Infrastructure)]
public static AsyncFlowControl SuppressFlow()

Return Value

Type: System.Threading.AsyncFlowControl
An AsyncFlowControl structure for restoring the flow.

ExceptionCondition
InvalidOperationException

The context flow is already suppressed.

Use this method to suppress the flow of the ExecutionContext on the current thread.

You must use the Undo method on the returned AsyncFlowControl structure to restore the flow of the ExecutionContext.

This method is protected with a SecurityAction.LinkDemand for SecurityPermissionFlag.Infrastructure permission. A fully trusted component can call this method to suppress the flow of the ExecutionContext during asynchronous calls. While the flow is suppressed, the Capture method returns null.

The following code example shows the use of the SuppressFlow method. This example is part of a larger example provided for the ExecutionContext class.

Console.WriteLine("Suppress the flow of the execution context.");
AsyncFlowControl aFC = ExecutionContext.SuppressFlow();

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.

.NET Framework

Supported in: 3.5, 3.0, 2.0

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