public static bool IsRunning()
        {
            Process current = Process.GetCurrentProcess();
            Process[] processes = Process.GetProcessesByName(current.ProcessName);
            //查找相同名称的进程 
            foreach (Process process in processes)
            {
                //忽略当前进程 
                if (process.Id != current.Id)
                {
                    //确认相同进程的程序运行位置是否一样. 
                    if (Assembly.GetExecutingAssembly().Location.Replace("/", "\\") == current.MainModule.FileName)
                    {
                        return true;
                    }
                }
            }
            return false;
        }