ServiceHostBase.OnBeginOpen(TimeSpan, AsyncCallback, Object) 方法

定义

开始在打开服务主机时调用的异步操作。Begins an asynchronous operation invoked on the opening of the service host.

protected:
 override IAsyncResult ^ OnBeginOpen(TimeSpan timeout, AsyncCallback ^ callback, System::Object ^ state);
protected override sealed IAsyncResult OnBeginOpen (TimeSpan timeout, AsyncCallback callback, object state);
protected override IAsyncResult OnBeginOpen (TimeSpan timeout, AsyncCallback callback, object state);
override this.OnBeginOpen : TimeSpan * AsyncCallback * obj -> IAsyncResult
Protected Overrides NotOverridable Function OnBeginOpen (timeout As TimeSpan, callback As AsyncCallback, state As Object) As IAsyncResult
Protected Overrides Function OnBeginOpen (timeout As TimeSpan, callback As AsyncCallback, state As Object) As IAsyncResult

参数

timeout
TimeSpan

TimeSpan,指定在超时前必须完成打开操作的时间。The TimeSpan that specifies how long the on-open operation has to complete before timing out.

callback
AsyncCallback

接收异步打开操作完成通知的 AsyncCallback 委托。The AsyncCallback delegate that receives the notification of the asynchronous operation on-open completion.

state
Object

一个由应用程序指定的对象,包含与打开操作异步相关联的状态信息。An object, specified by the application, that contains state information associated with the asynchronous on-open operation.

返回

IAsyncResult

引用异步打开操作的 IAsyncResultThe IAsyncResult that references the asynchronous on-open operation.

适用于