FRBDKUpdater.UpdaterRuntimeSettings.FromFile C# (CSharp) Method

        public static UpdaterRuntimeSettings FromFile(string fileName)
        {
            return FileManager.XmlDeserialize<UpdaterRuntimeSettings>(fileName);
        }

        private void FrmMainLoad(object sender, EventArgs e)
        {
            try
            {
                var extension = FileManager.GetExtension(mFileNameToLoad);

                List <string> stringList = new List <string>();

                if (extension == UpdaterRuntimeSettings.RuntimeSettingsExtension)
                {
                    var updaterRuntimeSettings = UpdaterRuntimeSettings.FromFile(mFileNameToLoad);
                    if (string.IsNullOrEmpty(updaterRuntimeSettings.LocationToSaveFile))
                    {
                        throw new Exception("UserRuntimeSettings LocationToSaveFile is null.  Loaded settings from " + Settings.UserAppPath);
                    }

                    _settings = Settings.GetSettings(updaterRuntimeSettings);
                    Logger.Log("Loading UpdaterRuntimeSettings");

                    if (string.IsNullOrEmpty(_settings.SaveFile))
                    {
                        throw new Exception("The settings SaveFile was null when loading from UpdaterRuntimeSettings");
                    }
                }
                else
                {
                    FrbdkUpdaterSettings tempSettings;

                    if (string.IsNullOrEmpty(mFileNameToLoad))
                    {
                        throw new Exception("The command line argument must not be null");
                    }

                    tempSettings = FrbdkUpdaterSettings.LoadSettings(mFileNameToLoad);
                    stringList.Add("Selected source:" + tempSettings.SelectedSource);
                    _settings = Settings.GetSettings(tempSettings);
                    Logger.Log("Loading FrbdkUpdaterSettings");

                    if (string.IsNullOrEmpty(_settings.SaveFile))
                    {
                        throw new Exception("The settings SaveFile was null when loading from the FRBDKUpdaterSettings");
                    }
                }



                Messaging.ShowAlerts = !_settings.Passive;

                if (!String.IsNullOrEmpty(_settings.Title))
                {
                    UserMessage = _settings.Title;
                }

                var downloader = new Downloader(_settings);

                downloader.ReportProgress   += DownloaderOnReportProgress;
                downloader.ErrorOccured     += DownloaderOnErrorOccured;
                downloader.DownloadComplete += DownloaderOnDownloadComplete;



                downloader.Start();
            }
            catch (Exception outerException)
            {
                MessageBox.Show(outerException.ToString());
            }
        }