The method that is called when an activity completes.
public delegate void CompletionCallback(
The type of the result value.
The execution environment of the activity.
The activity that completed.
The Result value of the activity that completed.
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.