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CancellationTokenSource.CancelAfter Method (Int32)

.NET Framework 4.5

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

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

member CancelAfter : 
        millisecondsDelay:int -> unit


Type: System.Int32

The time span to wait before canceling this CancellationTokenSource.


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.

.NET Framework

Supported in: 4.5

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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