实现程序的互斥运行

using System.Threading;
static void Main(){

bool createdNew;
Mutex m = new Mutex(true, "test", out createdNew);
if(createdNew){
  application.Run(new Form1() );
  m.ReleaseMutex();
}else{
  MessageBox.Show("不能运行程序的多个实例");
}//end if

}//end Main()