C# 只執行一個程序

在 google 中,終於找到了一個可行的方法,而且也比較切合我的想法,記錄一下
以下為我編寫中的程式中的啟動部份代碼,測試成功

using System;
using System.Collections.Generic;
using System.Windows.Forms;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Reflection;

namespace Seek_Downloader_Data_Manager
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {

            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            
            Process instance = RunningInstance();
            if (instance == null)
            {
                Application.Run(new Seek_Downloader_Data_Manager.Form1());
            }
            else
            {
                HandleRunningInstance(instance);
            }
        }

        [DllImport("User32.dll")]
        private static extern bool ShowWindowAsync(IntPtr hWnd, int cmdShow);
        [DllImport("User32.dll")]
        private static extern bool SetForegroundWindow(IntPtr hWnd);
        private const int WS_SHOWNORMAL = 1;

        public static Process RunningInstance()
        {
            Process current = Process.GetCurrentProcess();
            Process[] processes = Process.GetProcessesByName(current.ProcessName);

            foreach (Process process in processes)
            {
                if (process.Id != current.Id)
                {
                    if (Assembly.GetExecutingAssembly().Location.Replace("/", "\\") ==
                        current.MainModule.FileName)
                    {
                        return process;
                    }
                }
            }
            return null;
        }

        public static void HandleRunningInstance(Process instance)
        {
            ShowWindowAsync(instance.MainWindowHandle, WS_SHOWNORMAL);
            SetForegroundWindow(instance.MainWindowHandle);
        }
    }
}