private opcUAServer connectServer()
        {
            String serverIP   = "127.0.0.1";      //设备的IP地址
            String serverPort = "49320";          //倍福设备的端口号

            opcUAServer uaServer = new opcRealated.opcUA.opcUAServer();

            uaServer.CertificateEvent += new certificateValidation(m_Server_CertificateEvent);
            String connectVar = "opc.tcp://" + serverIP + ":" + serverPort;

            try
            {
                uaServer.Connect(connectVar);
            }
            catch (Exception ex)
            {
                MessageBox.Show("服务器连接异常,错误原因:" + ex, "错误", MessageBoxButton.OK, MessageBoxImage.Error);
                Console.WriteLine("服务器连接异常,错误原因:" + ex);
            }
            return(uaServer);
        }