Overlapped.Pack 方法

参考

定义

命名空间:: System.Threading

程序集:: System.Threading.Overlapped.dll

程序集:: mscorlib.dll

程序集:: netstandard.dll

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

将当前实例打包为一个 NativeOverlapped 结构。

重载

Pack(IOCompletionCallback)	已过时. 已过时. 已过时. 将当前实例打包为一个 NativeOverlapped 结构，并指定当异步 I/O 操作完成时调用的委托。
Pack(IOCompletionCallback, Object)	将当前实例打包为一个 NativeOverlapped 结构，并指定当异步 I/O 操作完成时调用的委托，以及作为缓冲区的托管对象。

Pack(IOCompletionCallback)

Source:: Overlapped.cs

Source:: Overlapped.cs

Source:: Overlapped.cs

注意

This method is not safe. Use Pack (iocb, userData) instead. https://go.microsoft.com/fwlink/?linkid=14202

注意

This overload is not safe and has been deprecated. Use Pack(IOCompletionCallback?, object?) instead.

注意

This method is not safe. Use Pack (iocb, userData) instead. http://go.microsoft.com/fwlink/?linkid=14202

重要

此 API 不符合 CLS。

将当前实例打包为一个 NativeOverlapped 结构，并指定当异步 I/O 操作完成时调用的委托。

public:
 System::Threading::NativeOverlapped* Pack(System::Threading::IOCompletionCallback ^ iocb);

[System.CLSCompliant(false)]
[System.Obsolete("This method is not safe.  Use Pack (iocb, userData) instead.  https://go.microsoft.com/fwlink/?linkid=14202")]
public System.Threading.NativeOverlapped* Pack (System.Threading.IOCompletionCallback? iocb);

[System.CLSCompliant(false)]
[System.Obsolete("This overload is not safe and has been deprecated. Use Pack(IOCompletionCallback?, object?) instead.")]
public System.Threading.NativeOverlapped* Pack (System.Threading.IOCompletionCallback? iocb);

[System.CLSCompliant(false)]
[System.Obsolete("This method is not safe.  Use Pack (iocb, userData) instead.  http://go.microsoft.com/fwlink/?linkid=14202")]
public System.Threading.NativeOverlapped* Pack (System.Threading.IOCompletionCallback iocb);

[System.CLSCompliant(false)]
public System.Threading.NativeOverlapped* Pack (System.Threading.IOCompletionCallback iocb);

[System.CLSCompliant(false)]
[System.Obsolete("This method is not safe.  Use Pack (iocb, userData) instead.  http://go.microsoft.com/fwlink/?linkid=14202")]
[System.Security.SecurityCritical]
public System.Threading.NativeOverlapped* Pack (System.Threading.IOCompletionCallback iocb);

[System.CLSCompliant(false)]
[System.Obsolete("This method is not safe.  Use Pack (iocb, userData) instead.  https://go.microsoft.com/fwlink/?linkid=14202")]
public System.Threading.NativeOverlapped* Pack (System.Threading.IOCompletionCallback iocb);

[<System.CLSCompliant(false)>]
[<System.Obsolete("This method is not safe.  Use Pack (iocb, userData) instead.  https://go.microsoft.com/fwlink/?linkid=14202")>]
member this.Pack : System.Threading.IOCompletionCallback -> nativeptr<System.Threading.NativeOverlapped>

[<System.CLSCompliant(false)>]
[<System.Obsolete("This overload is not safe and has been deprecated. Use Pack(IOCompletionCallback?, object?) instead.")>]
member this.Pack : System.Threading.IOCompletionCallback -> nativeptr<System.Threading.NativeOverlapped>

[<System.CLSCompliant(false)>]
[<System.Obsolete("This method is not safe.  Use Pack (iocb, userData) instead.  http://go.microsoft.com/fwlink/?linkid=14202")>]
member this.Pack : System.Threading.IOCompletionCallback -> nativeptr<System.Threading.NativeOverlapped>

[<System.CLSCompliant(false)>]
member this.Pack : System.Threading.IOCompletionCallback -> nativeptr<System.Threading.NativeOverlapped>

[<System.CLSCompliant(false)>]
[<System.Obsolete("This method is not safe.  Use Pack (iocb, userData) instead.  http://go.microsoft.com/fwlink/?linkid=14202")>]
[<System.Security.SecurityCritical>]
member this.Pack : System.Threading.IOCompletionCallback -> nativeptr<System.Threading.NativeOverlapped>

参数

iocb: IOCompletionCallback

一个 IOCompletionCallback 委托，表示在异步 I/O 操作完成时调用的回调方法。

NativeOverlapped*

一个指向 NativeOverlapped 结构的非托管指针。

属性: CLSCompliantAttribute ObsoleteAttribute SecurityCriticalAttribute

例外

InvalidOperationException

已对当前的 Overlapped 打包。

注解

此方法返回的非托管指针可以通过重叠的 I/O 操作传递给操作系统。在调用之前Unpack，结构NativeOverlapped在物理内存中固定。

重要

调用方负责固定缓冲区。但是，如果卸载应用程序域，则会销毁固定缓冲区的句柄，释放缓冲区，使 I/O 操作写入释放地址。因此，最好使用 Pack(IOCompletionCallback, Object) 方法重载，其中运行时固定缓冲区。

适用于

Pack(IOCompletionCallback, Object)

Source:: Overlapped.cs

Source:: Overlapped.cs

Source:: Overlapped.cs

重要

此 API 不符合 CLS。

将当前实例打包为一个 NativeOverlapped 结构，并指定当异步 I/O 操作完成时调用的委托，以及作为缓冲区的托管对象。

public:
 System::Threading::NativeOverlapped* Pack(System::Threading::IOCompletionCallback ^ iocb, System::Object ^ userData);

[System.CLSCompliant(false)]
public System.Threading.NativeOverlapped* Pack (System.Threading.IOCompletionCallback? iocb, object? userData);

[System.CLSCompliant(false)]
public System.Threading.NativeOverlapped* Pack (System.Threading.IOCompletionCallback iocb, object userData);

[System.CLSCompliant(false)]
[System.Runtime.InteropServices.ComVisible(false)]
public System.Threading.NativeOverlapped* Pack (System.Threading.IOCompletionCallback iocb, object userData);

[System.CLSCompliant(false)]
[System.Runtime.InteropServices.ComVisible(false)]
[System.Security.SecurityCritical]
public System.Threading.NativeOverlapped* Pack (System.Threading.IOCompletionCallback iocb, object userData);

[<System.CLSCompliant(false)>]
member this.Pack : System.Threading.IOCompletionCallback * obj -> nativeptr<System.Threading.NativeOverlapped>

[<System.CLSCompliant(false)>]
[<System.Runtime.InteropServices.ComVisible(false)>]
member this.Pack : System.Threading.IOCompletionCallback * obj -> nativeptr<System.Threading.NativeOverlapped>

[<System.CLSCompliant(false)>]
[<System.Runtime.InteropServices.ComVisible(false)>]
[<System.Security.SecurityCritical>]
member this.Pack : System.Threading.IOCompletionCallback * obj -> nativeptr<System.Threading.NativeOverlapped>

参数

iocb: IOCompletionCallback

一个 IOCompletionCallback 委托，表示在异步 I/O 操作完成时调用的回调方法。

userData: Object

对象或对象的数组，表示用于操作的输入或输出缓冲区。每个对象都表示一个缓冲区，例如字节数组。