TrySetCanceled Method
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TaskCompletionSource(Of TResult).TrySetCanceled Method

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Attempts to transition the underlying Task(Of TResult) into the Canceled state.

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

'Declaration
Public Function TrySetCanceled As Boolean

Return Value

Type: System.Boolean
True if the operation was successful; false if the operation was unsuccessful or the object has already been disposed.

This operation will return false if the Task(Of TResult) is already in one of the three final states: RanToCompletion, Faulted, or Canceled.

This method also returns false if the underlying Task(Of TResult) has already been disposed.

Windows Phone OS

Supported in: 8.1, 8.0

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