C# Winform程序防止多开的方法总结（亲测）

电玩女神 2022-10-01 13:41 169阅读 0赞

### 1、Winform启动的时候，检测是否存在同样的进程名，防止程序多开； ###

static class Program
        {
            /// <summary>
            /// 应用程序的主入口点。
            /// </summary>
            [STAThread]
            static void Main()
            {
                Process[] processes = Process.GetProcesses();
                Process currentProcess = Process.GetCurrentProcess();
                bool processExist = false;
                foreach (Process p in processes)
                {
                    if (p.ProcessName == currentProcess.ProcessName && p.Id != currentProcess.Id)
                    {
                        processExist = true;
                    }
                }
    
                if (processExist)
                {
                    Application.Exit();
                }
                else
                {
                    Application.EnableVisualStyles();
                    Application.SetCompatibleTextRenderingDefault(false);
                    Application.Run(new Form1());
                }
            }
        }

static class Program
        {
            /// <summary>
            /// 应用程序的主入口点。
            /// </summary>
            [STAThread]
            static void Main()
            {
                string processName = Process.GetCurrentProcess().ProcessName;
                Process[] processes = Process.GetProcessesByName(processName);
                //如果该数组长度大于1，说明多次运行
                if (processes.Length > 1)
                {
                    MessageBox.Show("程序已运行，不能再次打开！");
                    Environment.Exit(1);
                }
                else
                {
                    Application.EnableVisualStyles();
                    Application.SetCompatibleTextRenderingDefault(false);
                    Application.Run(new Form1());
                }
            }
        }

###  2、利用Mutex互斥对象防止程序多开； ###

static class Program
        {
            /// <summary>
            /// 应用程序的主入口点。
            /// </summary>
            [STAThread]
            static void Main()
            {
                bool isAppRunning = false;
                Mutex mutex = new Mutex(true, System.Diagnostics.Process.GetCurrentProcess().ProcessName, out isAppRunning);
                if (!isAppRunning)
                {
                    MessageBox.Show("程序已运行，不能再次打开！");
                    Environment.Exit(1);
                }
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                Application.Run(new Form1());
            }
        }

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[https_www.cnblogs.com_willingtolove_p_11008804.html]: https://www.cnblogs.com/willingtolove/p/11008804.html