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IOCompletionCallback Delegate

Microsoft Silverlight will reach end of support after October 2021. Learn more.

This type can be used only by trusted applications. If you try to use its members in a partial-trust application, your code will throw a MethodAccessException exception. This type is security-critical, which restricts its use.

[SECURITY CRITICAL]

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)

Syntax

'Declaration
Visual Basic does not support APIs that consume or return unsafe types.

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

Parameters

  • numBytes
    Type: System.UInt32
    The number of bytes that are transferred.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

See Also

Reference

System.Threading Namespace