IAsyncResult.CompletedSynchronously Property
Gets a value that indicates whether the asynchronous operation completed synchronously.
Assembly: mscorlib (in mscorlib.dll)
Property Value
Type: System.Booleantrue 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.
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1