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)
'Declaration Visual Basic does not support APIs that consume or return unsafe types.
Requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.