Question

在我的DoWork（）函数中，我向sip服务器注册。然后我必须等待回复。但是，我收到的回复是在另一个事件中收到的。但是，在我能够检查DoWork（）中的标志之前，DoWork（）已经准备就绪并且响应在之后。

我正在尝试找到一种在DoWork（）中等待的方法，直到我在Diagnotic事件中得到响应。我有一个在该事件中设置的全局标志，我必须检查DoWork（）。

感谢您的任何建议，

// Do work in background worker
//Will return less than 8 if there are no error message from the library 
        if (!this.bgwProcessLogin.CancellationPending)
        {
                // Register and wait for response
                VaxSIPUserAgentOCX.RegisterToProxy(3600);
        }
        else
        {
                // Update label
                if (this.lblRegistering.InvokeRequired)
                {
                  // do something here
                }
                else
                {
                    // Display error
                }
         }

// WAIT FOR A RESPONSE FROM THE DIAGNOTIC EVENT BEFORE CONTINUING - MAYBE JOIN HERE
        if (!this.bgwProcessLogin.CancellationPending)
        {
            if (this.responseFlag)
            {
                // Do something here   
            }
            else
            {
                // Do something else here
            }
        }


// Another function where I receive the response
private void VaxSIPUserAgentOCX_OnIncomingDiagnostic(object sender, AxVAXSIPUSERAGENTOCXLib._DVaxSIPUserAgentOCXEvents_OnIncomingDiagnosticEvent e)
    {
        string messageSip = e.msgSIP;
        //Find this message in the sip header

        string sipErrorCode = "600 User Found"; 
        if (messageSip.Contains(sipErrorCode))
        {
            // Set global flag for response
            this.responseFlag = true;
        }
}

Answer 1

您可以使用ManualResetEvent。一旦您的代码命中WaitOne调用，它将一直阻塞，直到事件设置为止。 WaitOne调用也会重载，因此您可以根据需要提供等待时间。

void SomeFunction()
{
// Do work in background worker
//Will return less than 8 if there are no error message from the library 
        if (!this.bgwProcessLogin.CancellationPending)
        {
                // Register and wait for response
                VaxSIPUserAgentOCX.RegisterToProxy(3600);
        }
        else
        {
                // Update label
                if (this.lblRegistering.InvokeRequired)
                {
                  // do something here
                }
                else
                {
                    // Display error
                }
         }

// WAIT FOR A RESPONSE FROM THE DIAGNOTIC EVENT BEFORE CONTINUING - MAYBE JOIN HERE

        waitEvent.WaitOne();
        if (!this.bgwProcessLogin.CancellationPending)
        {
            if (this.responseFlag)
            {
                // Do something here   
            }
            else
            {
                // Do something else here
            }
        }
}

ManualResetEvent waitEvent = new ManualResetEvent(false);

// Another function where I receive the response
private void VaxSIPUserAgentOCX_OnIncomingDiagnostic(object sender, AxVAXSIPUSERAGENTOCXLib._DVaxSIPUserAgentOCXEvents_OnIncomingDiagnosticEvent e)
    {
        string messageSip = e.msgSIP;
        //Find this message in the sip header

        string sipErrorCode = "600 User Found"; 
        if (messageSip.Contains(sipErrorCode))
        {
            // Set global flag for response
            this.responseFlag = true;
            waitEvent.Set();
        }
}

C＃在后台工作者DoWork（）中加入线程

1 个答案: