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IOCompletionCallback Delegate

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)

[ComVisibleAttribute(true)]
[CLSCompliantAttribute(false)]
public delegate void IOCompletionCallback(
	uint errorCode,
	uint numBytes,
	NativeOverlapped* pOVERLAP
)

Parameters

errorCode
Type: System.UInt32

The error code.

numBytes
Type: System.UInt32

The number of bytes that are transferred.

pOVERLAP
Type: System.Threading.NativeOverlapped*

A NativeOverlapped representing an unmanaged pointer to the native overlapped value type.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

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