CompletedSynchronously Property

IAsyncResult.CompletedSynchronously Property


Gets a value that indicates whether the asynchronous operation completed synchronously.

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

bool CompletedSynchronously { get; }

Property Value

Type: System.Boolean

true if the asynchronous operation completed synchronously; otherwise, false.

If the synchronous completion of the call is detected in the AsyncCallback delegate, it is probable that the thread that initiated the asynchronous operation is the current thread.

Notes to Implementers:

Most implementers of the IAsyncResult interface will not use this property and should return false. Beginning with the .NET Framework 4.5, a task that is created with the FromAsync method will not complete if this property is not implemented correctly. See Application Compatibility in the .NET Framework 4.5.

Notes to Callers:

Use this property to determine if the asynchronous operation completed synchronously. For example, this property can return true for an asynchronous I/O operation if the I/O request was small.

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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