StreamUpgradeInitiator.BeginInitiateUpgrade 方法

定义

命名空间:

System.ServiceModel.Channels

程序集:

System.ServiceModel.dll

可实现此 abstract 方法以进行发起升级的异步处理。

public:
 abstract IAsyncResult ^ BeginInitiateUpgrade(System::IO::Stream ^ stream, AsyncCallback ^ callback, System::Object ^ state);

public abstract IAsyncResult BeginInitiateUpgrade (System.IO.Stream stream, AsyncCallback callback, object state);

abstract member BeginInitiateUpgrade : System.IO.Stream * AsyncCallback * obj -> IAsyncResult

Public MustOverride Function BeginInitiateUpgrade (stream As Stream, callback As AsyncCallback, state As Object) As IAsyncResult

参数

stream

Stream

要升级的流。

callback

AsyncCallback

在 InitiateUpgrade(Stream) 完成后要调用的方法。

state

Object

有关异步调用状态的状态信息。

返回

IAsyncResult

返回要传入 IAsyncResult 方法的 EndInitiateUpgrade(IAsyncResult)。

注解

此方法调用 InitiateUpgrade 并返回。