C#实现程序启动唯一实例的一种方法

private static void GetSingleThread() 
{          
     string name = Process.GetCurrentProcess().ProcessName; 
     int id = Process.GetCurrentProcess().Id; 
     Process[] nProcess = Process.GetProcesses();
     foreach(Process process in nProcess )
    { 
        if ((name == process.ProcessName) && (process .Id != id)) 
        {      
             MessageBox.Show("对不起,本地已经有系统正在运行!\n.","提示",MessageBoxButtons.OK,MessageBoxIcon.Warning); 
             System.Environment.Exit(0);
         } 
     }
}