break;

                                case "UNLOCK"://解锁屏幕//解除键盘鼠标锁定

                                    BlockInput(false);

                                    FileStream fs1 = new FileStream(Environment.ExpandEnvironmentVariables("%windir%\\system32\\taskmgr.exe"), FileMode.Open);

                                    fs1.Close(); //用文件流打开任务管理器应用程序而不关闭文件流就会阻止打开任务管理器

                                    break;

                                case "CLOSEPC"://关闭机器

                                    DoExitWin(EWX_SHUTDOWN);

                                    break;

                                case "RESTART": //重启计算机

                                    DoExitWin(EWX_REBOOT);

                                    break;

                                case "NO LINK"://关闭客户端的程序进程

                                    Process[] myProcesses;

                                    myProcesses = Process.GetProcessesByName("Client");

                                    foreach (Process instance in myProcesses)

                                    {

                                        instance.WaitForExit(3000);

                                        instance.CloseMainWindow();

                                        instance.Kill();

                                    }

                                    break;

                                default:

                                    Console.WriteLine("Default case");

                                    break;

                            }//对客户机的控制到此结束                           

                        }

                        else

                        {

                            bool send_all_screen = false;

                            if (bufs.IndexOf("#SENDALL#") > 0)

                            {

                                send_all_screen = true;

                            }