Visual Studio 2005(C#)中只允許一個實例運行的一種方法

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

namespace School.ReadPaperControl
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            // 控制僅打開單實例進程
            if (System.Diagnostics.Process.GetProcessesByName(System.Diagnostics.Process.GetCurrentProcess().ProcessName).Length == 0)
            {
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                Application.Run(new frmControl());
            }
        }
    }
}