Receives the error code, number of bytes, and overlapped value type when an I/O operation completes on the thread pool.
This API is not CLS-compliant. Namespace: System.Threading
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.