C#簡單的防止程序運行多個實例的方法

簡單的程序防重複運行

必須加入的命名空間

using System.Reflection;
using System.Threading;

        /// <summary>
        /// 方法一：創建互斥體法,根據名稱判斷是否運行
        /// </summary>
        private void Form1_Load(object sender, EventArgs e)
        {
            bool create;
            Mutex m = new Mutex(false, Assembly.GetExecutingAssembly().FullName, out create);
            if (!create)
            {
                MessageBox.Show("軟件已經運行", "系統提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning);
                this.Close();
                return;
            }
        }

        /// <summary>
        /// 方法二：根據名稱判斷是否運行
        /// </summary>
        private void Mutex2()
        {
            System.Threading.Mutex mutexMyapplication = new Mutex(false, "exerepeat.exe");
            if (!mutexMyapplication.WaitOne(100,false))
            {
                MessageBox.Show("程序已經運行", "系統提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning);
                this.Close();
                return;
            }
        }
        

/// <summary>
        /// 方法三：通過進程名稱判斷是否運行
        /// </summary>
        private void Mutex3()
        {
            Process currentpro = Process.GetCurrentProcess();
            Process[] processes = Process.GetProcessesByName(currentpro.ProcessName);
            foreach (var item in processes)
            {
                if (item.Id!=currentpro.Id)
                {
                    if (item.MainModule.FileName==currentpro.MainModule.FileName)
                    {
                        MessageBox.Show("程序已經運行","系統提示",MessageBoxButtons.OKCancel,MessageBoxIcon.Warning);
                        this.Close();
                        return;
                    }
                }
            }
        }