private void Init()
 {
     _onCmdExecute = new Dictionary <string, CmdHandler>();
     _sysHandler  += new SysEventHandler(SysCtrlHandler);
     SetConsoleCtrlHandler(_sysHandler, true);
     InitLogLevel();
     this.RegCmd("help", OnCmdHelp);
     this.RegCmd("exit", OnCmdExit);
 }
 private static extern bool SetConsoleCtrlHandler(SysEventHandler handler, bool add);