c# - C# 在表单中关闭 TCP 通道

Question

关闭表单后如何关闭表单中的 TCP 通道，我想再次打开表单以使用相同的表单启动 TCP 通道。但它返回一条错误消息，告知 TCP 通道已注册。我尝试了几种方法来仅关闭此表单，但由于 Application.Exit 正在关闭整个应用程序而返回失败

private void EstablishRemote()
            {
                SoapServerFormatterSinkProvider soap = new SoapServerFormatterSinkProvider();
                BinaryServerFormatterSinkProvider binary = new BinaryServerFormatterSinkProvider();
                soap.TypeFilterLevel = System.Runtime.Serialization.Formatters.TypeFilterLevel.Full;
                binary.TypeFilterLevel = System.Runtime.Serialization.Formatters.TypeFilterLevel.Full;

                soap.Next = binary;

                Hashtable table = new Hashtable();
                table.Add("port", ServerPortValue.Text);

                TcpChannel channel = new TcpChannel(table, null, soap);

                FTPServer.Logger = Logger;

                ChannelServices.RegisterChannel(channel,false);
                RemotingConfiguration.ApplicationName = "FTPServerAPP";
                RemotingConfiguration.RegisterWellKnownServiceType(typeof(FTPServer),"ftpserver.svr", WellKnownObjectMode.Singleton);

                Logger.Text += Environment.NewLine+ "***** TCP Channel has been published... *****";

            }

    private void StartServer_Click(object sender, EventArgs e)
            {
                if (String.IsNullOrEmpty(ServerPortValue.Text))
                {
                    MessageBox.Show("Please enter server port.", "Server", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    return;
                }
                EstablishRemote();
                ServerPortValue.ReadOnly  = true;
                StartServer.Enabled = false;
                ServerStatusMessage.Text = "Server has been started...";
            }