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CancellationTokenSource.Cancel Method (Boolean)

Communicates a request for cancellation.

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

public void Cancel(
	bool throwOnFirstException
)

Parameters

throwOnFirstException
Type: System.Boolean
Specifies whether exceptions should immediately propagate.

ExceptionCondition
ObjectDisposedException

This CancellationTokenSource has been disposed.

AggregateException

An aggregate exception containing all the exceptions thrown by the registered callbacks on the associated CancellationToken.

The associated CancellationToken will be notified of the cancellation and will transition to a state where IsCancellationRequested returns true.

Any callbacks or cancelable operations registered with the CancellationToken will be executed.

Cancelable operations and callbacks registered with the token should not throw exceptions.

If throwOnFirstException is true, an exception will immediately propagate out of the call to Cancel, preventing the remaining callbacks and cancelable operations from being processed.

If throwOnFirstException is false, this overload will aggregate any exceptions thrown into an AggregateException, such that one callback throwing an exception will not prevent other registered callbacks from being executed.

The ExecutionContext that was captured when each callback was registered will be reestablished when the callback is invoked.

.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.

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