Program.cs

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using System;
using System.Text;
using System.Windows.Forms;

namespace KeyGo
{
    internal static class Program
    {
        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        private static void Main()
        {
            var p = AppControl.GetCurrentRunningInstance();
            if (p != null)
            {
                if (p.MainWindowHandle == IntPtr.Zero)
                    MessageBox.Show("应用程序已启用或未关闭，请勿重复启动程序。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                else
                    AppControl.ShowWindow(p);
            }
            else
            {
                //设置应用程序处理异常方式：ThreadException处理
                Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException);
                //处理UI线程异常
                Application.ThreadException += Application_ThreadException;
                //处理非UI线程异常
                AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException;
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                Application.Run(new FormMain());
            }
        }

        private static void Application_ThreadException(object sender, System.Threading.ThreadExceptionEventArgs e)
        {
            string str = GetExceptionMsg(e.Exception, e.ToString());
            //Logger.Info("应用程序线程异常", e.Exception);
            MessageBox.Show(str, "系统错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }

        private static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
        {
            string str = GetExceptionMsg(e.ExceptionObject as Exception, e.ToString());
            //Logger.Info("未捕获异常", e.ExceptionObject as Exception);
            MessageBox.Show(str, "系统错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }

        /// <summary>
        /// 生成自定义异常消息
        /// </summary>
        /// <param name="ex">异常对象</param>
        /// <param name="backStr">备用异常消息：当ex为null时有效</param>
        /// <returns>异常字符串文本</returns>
        private static string GetExceptionMsg(Exception ex, string backStr)
        {
            StringBuilder sb = new StringBuilder();
            sb.AppendLine("****************************异常文本****************************");