CancellationTokenSource.CancelAfter Method (Int32)

.NET Framework (current version)

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Schedules a cancel operation on this CancellationTokenSource after the specified number of milliseconds.

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

public void CancelAfter(
	int millisecondsDelay


Type: System.Int32

The time span to wait before canceling this CancellationTokenSource.

Exception Condition

The exception thrown when this CancellationTokenSource has been disposed.


The exception thrown when millisecondsDelay is less than -1.

The countdown for the millisecondsDelay starts during this call. When the millisecondsDelay expires, this CancellationTokenSource is canceled, if it has not been canceled already.

Subsequent calls to CancelAfter will reset the millisecondsDelay for this CancellationTokenSource, if it has not been canceled already.

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.5
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
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