AsyncOperation.OperationCompleted Method

Ends the lifetime of an asynchronous operation.

Namespace:  System.ComponentModel
Assemblies:   System (in System.dll)
  System.ComponentModel.EventBasedAsync (in System.ComponentModel.EventBasedAsync.dll)

'Declaration
Public Sub OperationCompleted

ExceptionCondition
InvalidOperationException

OperationCompleted has been called previously for this task.

Call the OperationCompleted method to end the lifetime of an asynchronous operation. After this method is called for a particular task, calls to its corresponding AsyncOperation will raise an exception.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

.NET for Windows Phone apps

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