Receives the error code, number of bytes, and overlapped value type when an I/O operation completes on the thread pool.
Assembly: mscorlib (in mscorlib.dll)
[CLSCompliantAttribute(false)] [ComVisibleAttribute(true)] public delegate void IOCompletionCallback( uint errorCode, uint numBytes, NativeOverlapped* pOVERLAP )
Requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.
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.