using System;using System.Collections.Generic;using System.Windows.Forms;using System.Threading;namespace OneCase
...{
static class Program
...{ /**//// <summary> /// 应用程序的主入口点。
/// </summary> [STAThread] static void Main() ...{ bool isNew; Mutex m = new Mutex(true, "MyApp", out isNew); if (isNew) ...{ Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); Application.Run(new Form1()); } else ...{ MessageBox.Show("已经存在一个程序实例！"); Application.Exit(); } } }
}