.NET: 防止多个应用程序同时开

用到了Mutex这个类，直接看代码~

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

 namespace WindowsTest
 {
     static class Program
     {
         /// <summary>
         /// 应用程序的主入口点。
         /// </summary>
         [STAThread]
         static void Main()
         {
             bool singleAppRunning = false;
             Mutex mutex = new Mutex(true, Application.ProductName, out singleAppRunning);
             if (singleAppRunning)
             {
                 Application.EnableVisualStyles();
                 Application.SetCompatibleTextRenderingDefault(false);
                 Application.Run(new Form1());
                 mutex.ReleaseMutex();
             }
             else
             {
                 MessageBox.Show("程序已经在运行，请不要同时运行多个本程序！", "提示！", MessageBoxButtons.OK, MessageBoxIcon.Information);
                 Application.Exit();
             }
         }
     }
 }