ScreenToGif.App.Application_Startup C# (CSharp) Method

        private void Application_Startup(object sender, StartupEventArgs e)
        {
            #region Unhandled Exceptions

            AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException;

            #endregion

            #region Arguments

            try
            {
                //TODO: Language arguments.
                if (e.Args.Length > 0)
                {
                    Argument.Prepare(e.Args);
                }
            }
            catch (Exception ex)
            {
                var errorViewer = new ExceptionViewer(ex);
                errorViewer.ShowDialog();

                LogWriter.Log(ex, "Generic Exception - Arguments");
            }

            #endregion

            #region Upgrade Application Settings

            //See http://stackoverflow.com/questions/534261/how-do-you-keep-user-config-settings-across-different-assembly-versions-in-net
            if (Settings.Default.UpgradeRequired)
            {
                Settings.Default.Upgrade();
                Settings.Default.UpgradeRequired = false;
                Settings.Default.Save();
            }

            #endregion

            #region Language

            try
            {
                LocalizationHelper.SelectCulture(Settings.Default.Language);
            }
            catch (Exception ex)
            {
                var errorViewer = new ExceptionViewer(ex);
                errorViewer.ShowDialog();
                LogWriter.Log(ex, "Language Settings Exception.");
            }

            #endregion

            try
            {
                #region Startup

                if (Settings.Default.StartUp == 0)
                {
                    var startup = new Startup();
                    Current.MainWindow = startup;
                    startup.ShowDialog();
                }
                else if (Settings.Default.StartUp == 4 || Argument.FileNames.Any())
                {
                    var edit = new Editor();
                    Current.MainWindow = edit;
                    edit.ShowDialog();
                }
                else
                {
                    var editor = new Editor();
                    List<FrameInfo> frames = null;
                    ExitAction exitArg = ExitAction.Exit;
                    bool? result = null;

                    #region Recorder or Webcam

                    if (Settings.Default.StartUp == 1)
                    {
                        var rec = new Recorder(true);
                        result = rec.ShowDialog();
                        exitArg = rec.ExitArg;
                        frames = rec.ListFrames;
                    }
                    else if (Settings.Default.StartUp == 2)
                    {
                        var web = new Windows.Webcam(true);
                        result = web.ShowDialog();
                        exitArg = web.ExitArg;
                        frames = web.ListFrames;
                    }
                    else if (Settings.Default.StartUp == 3)
                    {
                        var board = new Board();
                        result = board.ShowDialog();
                        exitArg = board.ExitArg;
                        frames = board.ListFrames;
                    }

                    #endregion

                    if (result.HasValue && result.Value)
                    {
                        #region If Close

                        Environment.Exit(0);

                        #endregion
                    }
                    else if (result.HasValue)
                    {
                        #region If Backbutton or Stop Clicked

                        if (exitArg == ExitAction.Recorded)
                        {
                            editor.ListFrames = frames;
                            Current.MainWindow = editor;
                            editor.ShowDialog();
                        }

                        #endregion
                    }
                }

                #endregion
            }
            catch (Exception ex)
            {
                var errorViewer = new ExceptionViewer(ex);
                errorViewer.ShowDialog();
                LogWriter.Log(ex, "Generic Exception - Root");
            }
        }