20240301_JSEQ_upperpc/JiangsuEarthquakeNow/JiangsuEarthquake/App.xaml.cs

using System.Configuration;
using System.Data;
using System.Windows;
using Application = System.Windows.Application;

namespace JiangsuEarthquake
{
    /// <summary>
    /// Interaction logic for App.xaml
    /// </summary>
    public partial class App : Application
    {
        private static Mutex mutex = new Mutex(true, "JiangsuEarthquake");

        protected override void OnStartup(StartupEventArgs e)
        {
            base.OnStartup(e);

            if (!mutex.WaitOne(TimeSpan.Zero, true))
            {
                //MessageBox.Show("应用程序已运行。");
                Application.Current.Shutdown();
            }

            // 程序的其他启动代码...
        }
    }

}