Audit_APP/App.xaml.cs

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Threading.Tasks;
using System.Windows;

namespace Audit
{
    /// <summary>
    /// App.xaml 的交互逻辑
    /// </summary>
    public partial class App : Application
    {
        /// <summary> 
        /// App.xaml 的交互逻辑 
        /// </summary> 
            System.Threading.Mutex mutex;
        /// <summary> 
        ///检查应用进程，防止重复启动。
        /// </summary> 
        public App()
            {
                this.Startup += new StartupEventHandler(App_Startup);
            }

            void App_Startup(object sender, StartupEventArgs e)
            {
                bool ret;
                mutex = new System.Threading.Mutex(true, "ElectronicNeedleTherapySystem", out ret);

                if (!ret)
                {
                    MessageBox.Show("SC:审计管理已启动");
                    Environment.Exit(0);
                }

            }
    }
}