C# Session.Close方法代碼示例

//.........這裏部分代碼省略.........
                    Console.WriteLine("Updated endpoint description for url: {0}", endpointDescription.EndpointUrl);

                    endpointDescription = endpoint.Description;
                    endpointConfiguration = endpoint.Configuration;
                }

                X509Certificate2 clientCertificate = configuration.SecurityConfiguration.ApplicationCertificate.Find();

                // set up a callback to handle certificate validation errors.
                configuration.CertificateValidator.CertificateValidation += new CertificateValidationEventHandler(CertificateValidator_CertificateValidation);

                // Initialize the channel which will be created with the server.
                ITransportChannel channel = SessionChannel.Create(
                    configuration,
                    endpointDescription,
                    endpointConfiguration,
                    clientCertificate,
                    messageContext);

                // Wrap the channel with the session object.
                // This call will fail if the server does not trust the client certificate.
                Session session = new Session(channel, configuration, endpoint, null);
                
                session.ReturnDiagnostics = DiagnosticsMasks.All;

                // register keep alive callback.
                // session.KeepAlive += new KeepAliveEventHandler(Session_KeepAlive);

                // passing null for the user identity will create an anonymous session.
                UserIdentity identity = null; // new UserIdentity("iamuser", "password");        

                // create the session. This actually connects to the server.
                session.Open("My Session Name", identity);

                //Read some history values:
                string str = "";
                do
                {
                    Console.WriteLine("Select action from the menu:\n");
                    Console.WriteLine("\t 0 - Browse");
                    Console.WriteLine("\t 1 - Update");
                    Console.WriteLine("\t 2 - ReadRaw");
                    Console.WriteLine("\t 3 - ReadProcessed");
                    Console.WriteLine("\t 4 - ReadAtTime");
                    Console.WriteLine("\t 5 - ReadAttributes");
                    Console.WriteLine("\t 6 - DeleteAtTime");
                    Console.WriteLine("\t 7 - DeleteRaw");


                    Console.WriteLine("\n\tQ - exit\n\n");

                    str = Console.ReadLine();
                    Console.WriteLine("\n");

                    try
                    {
                        if (str == "0")
                        {
                            Browse(session);
                        }
                        else if (str == "1")
                            HistoryUpdate(session);
                        else if (str == "2")
                            HistoryReadRaw(session);
                        else if (str == "3")
                            HistoryReadProcessed(session);
                        else if (str == "4")
                            HistoryReadAtTime(session);
                        else if (str == "5")
                            HistoryReadAttributes(session);
                        else if (str == "6")
                            HistoryDeleteAtTime(session);
                        else if (str == "7")
                            HistoryDeleteRaw(session);
                    }
                    catch (Exception e)
                    {
                        Console.WriteLine("Exception occured: " + e.Message);
                    }

                } while (str != "Q" && str != "q");


                // Display some friendly info to the console and then wait for the ENTER key to be pressed.
                Console.WriteLine( "Connected to {0}.\nPress ENTER to disconnect to end.", DefaultServerUrl);
                Console.ReadLine();

                // Close and Dispose of our session, effectively disconnecting us from the UA Server.
                session.Close();
                session.Dispose();
            }
            catch (Exception e)
            {
                Console.WriteLine( "Unexpected exception: {0}.\nPress ENTER to disconnect to end.", e.Message);
                Console.ReadLine();
                Console.WriteLine();
                Console.WriteLine("========================================================================================");
                Console.WriteLine();
            }
        }

        /// <summary>
        /// Stop using the session
        /// </summary>
        /// <param name="session"></param>
        private void RemoveSession(Session session)
        {

            // The client source code for the session is written to remove all subscriptions and 
            // remove all monitored items from the subscriptions. All that we should have to do here is 
            // close the session.
            if (session != null)
            {
                session.KeepAlive -= StandardClient_KeepAlive;
                session.Close();
                session = null;
            }
        }