保证Winform程序只有一个实例在运行

代码

using  System;
using  System.Collections.Generic;
using  System.Text;
using  System.Threading;
using  System.Windows.Forms;

namespace  Terry{
     class  Program
    {
         private  Mutex mutex  =   null ;

         public  Program()
        {
            mutex  =   new  Mutex( false ,  " TerrySoft_MUTEX " );
             if  ( ! mutex.WaitOne( 0 ,  false ))
            {
                mutex.Close();
                mutex  =   null ;
            }
        }

         public   void  ReleaseMutex()
        {
             if  (mutex  !=   null )
            {
                mutex.ReleaseMutex();
                mutex  =   null ;
            }
        }

         ~ Program()
        {
            ReleaseMutex();
        }

                 ///  

         ///  The main entry point for the application.
         ///  

        [STAThread]
         static   void  Main()
        {

            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault( false );

            Program cm  =   new  Program();
             if  (cm.mutex  ==   null )
            {
                MessageBox.Show( " 已经有一个程序在运行中。 " );
            }
             else
            {
                Application.Run( new  frmStart());
            }
            cm.ReleaseMutex(); // 手工释放Mutex

        }

    }
}

 

转载于:https://www.cnblogs.com/zitjubiz/archive/2010/03/31/1701219.html