使用英语阅读

通过

IOCompletionCallback 委托

  • 参考

定义

命名空间:
System.Threading
程序集:
mscorlib.dll, System.Threading.Overlapped.dll
程序集:
netstandard.dll, System.Threading.Overlapped.dll
程序集:
System.Threading.Overlapped.dll
程序集:
mscorlib.dll
程序集:
netstandard.dll

重要

此 API 不符合 CLS。

当 I/O 操作在线程池上完成时接收错误代码、字节数和重叠值类型。

C# 
[System.CLSCompliant(false)]
[System.Security.SecurityCritical]
public delegate void IOCompletionCallback(uint errorCode, uint numBytes, NativeOverlapped* pOVERLAP);
C# 
[System.CLSCompliant(false)]
public delegate void IOCompletionCallback(uint errorCode, uint numBytes, NativeOverlapped* pOVERLAP);
C# 
[System.CLSCompliant(false)]
[System.Runtime.InteropServices.ComVisible(true)]
public delegate void IOCompletionCallback(uint errorCode, uint numBytes, NativeOverlapped* pOVERLAP);
C# 
[System.CLSCompliant(false)]
[System.Security.SecurityCritical]
[System.Runtime.InteropServices.ComVisible(true)]
public delegate void IOCompletionCallback(uint errorCode, uint numBytes, NativeOverlapped* pOVERLAP);

参数

errorCode
UInt32

错误代码。

numBytes
UInt32

传输的字节数。

pOVERLAP
NativeOverlapped*

NativeOverlapped，表示指向本机重叠值类型的非托管指针。

属性
CLSCompliantAttribute SecurityCriticalAttribute ComVisibleAttribute

扩展方法

GetMethodInfo(Delegate)

获取指示指定委托表示的方法的对象。

适用于

产品 版本
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 2.0, 2.1
UWP 10.0