private bool IsRegistryExist(string suffix, string path)
        {
            try
            {
                using RegistryKey hkSoftWare = Registry.ClassesRoot.OpenSubKey(suffix);
                if (hkSoftWare == null) return false;

                // 獲取到該項(xiàng)下所有的名稱(chēng)
                string[] sValueNameColl = hkSoftWare.GetValueNames();

                int len = sValueNameColl.Length;

                // 獲取到所有名稱(chēng)對(duì)應(yīng)的數(shù)據(jù)
                for (int i = 0; i < len; i++)
                {
                    string data = hkSoftWare.GetValue(sValueNameColl[i]).ToString();

                    if (string.Equals(data, string.Empty)) continue;

                    RegistryKey rk = Registry.ClassesRoot.OpenSubKey($"{data}\\shell\\open\\command");

                    if (rk == null) continue;

                    var commandData = rk.GetValue(null)?.ToString();

                    rk.Close();

                    if (commandData == null) return false;

                    if (string.Equals(commandData, string.Empty)) return false;

                    if (string.Equals(commandData, path)) return true;

                }
            }
            finally
            {

            }
            return false;
        }

        private void UpdateRegistry()
        {
			// 獲取程序運(yùn)行路徑
            var processModule = Process.GetCurrentProcess().MainModule;

            if (processModule == null) return;

            if (IsRegistryExist(".mySuffix", processModule.FileName)) return;

            var processWithSuffix = processModule.ModuleName.Split('.')[0] + ".mySuffix";

            var registryFilePath = $"{Path.GetDirectoryName(processModule.FileName)}\\Registry.reg";
            if (!File.Exists(registryFilePath))
            {
                string registryStr =
                    "?Windows Registry Editor Version 5.00\r\n" +
                    "\r\n" +
                    "[HKEY_CLASSES_ROOT\\##]\r\n" +
                    "@=\"###\"\r\n" +
                    "\r\n" +
                    "[HKEY_CLASSES_ROOT\\###\\DefaultIcon]\r\n" +
                    "@=\"#\"\r\n" +
                    "\r\n" +
                    "[HKEY_CLASSES_ROOT\\###\\shell]\r\n" +
                    "\r\n" +
                    "[HKEY_CLASSES_ROOT\\###\\shell\\open]\r\n" +
                    "\r\n" +
                    "[HKEY_CLASSES_ROOT\\###\\shell\\open\\command]\r\n" +
                    "@=\"#\"" + "\r\n";


                // 替換
                var newRegistryStr = registryStr.Replace("###", processWithSuffix).Replace("##", ".mySuffix").Replace("#", processModule.FileName.Replace("\\", "\\\\"));

                File.WriteAllText(registryFilePath, newRegistryStr);

            }

            Process.Start(new ProcessStartInfo("cmd", $"/c {registryFilePath}")
            {
                UseShellExecute = false,
                CreateNoWindow = true
            });

        }

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


            UpdateRegistry();

        }