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DiscoveryClient.CancelAsync Method

Cancels a pending asynchronous operation.

Namespace:  System.ServiceModel.Discovery
Assembly:  System.ServiceModel.Discovery (in System.ServiceModel.Discovery.dll)

public void CancelAsync(
	Object userState


Type: System.Object
A user specified state object that is passed to the FindAsync() method or one of the ResolveAsync() methods. It identifies the pending asynchronous operation to cancel.

An ArgumentNullException is thrown if userState is null. If multiple FindAsync() or ResolveAsync() operations are called with the same userState value, and CancelAsync(Object) is called with that userState value, an InvalidOperationException is thrown,

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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