Tomboy.ExportMultipleDialog.SavePreferences C# (CSharp) Method

		public void SavePreferences ()
		{
			string dir = System.IO.Path.GetDirectoryName (Filename);
			Preferences.Set (Preferences.EXPORTHTML_LAST_DIRECTORY, dir);
		}

        /// <summary>
        /// Called when the user chooses "Export All" from the menu, allows user to select destination via GUI.
        /// </summary>
        /// <param name="sender">
        void ExportAllNotesViaGUI()
        {
            Logger.Info("Activated export all to " + export_type_pretty_name);
            exporting_single_notebook = false;

            //Opens the folder selection dialog
            ExportMultipleDialog dialog =
                new ExportMultipleDialog(String.Format(Catalog.GetString("All Notes {0} Export"), export_type_pretty_name), export_type_pretty_name);
            int response = dialog.Run();

            if (response != (int)Gtk.ResponseType.Ok)
            {
                Logger.Debug("User clicked cancel.");
                dialog.Destroy();
                return;
            }
            string output_folder = SanitizePath(dialog.Filename);

            try {
                ExportAllNotes(output_folder);

                //Successful export: clean up and inform.
                dialog.SavePreferences();
                ShowSuccessDialog(output_folder);
            } catch (UnauthorizedAccessException) {
                Logger.Error(Catalog.GetString("Could not export, access denied."));
                ShowErrorDialog(output_folder, dialog,
                                Catalog.GetString("Access denied."));
                return;
            } catch (DirectoryNotFoundException) {
                Logger.Error(Catalog.GetString("Could not export, folder does not exist."));
                ShowErrorDialog(output_folder, dialog,
                                Catalog.GetString("Folder does not exist."));
                return;
            } catch (Exception ex) {
                Logger.Error(Catalog.GetString("Could not export: {0}"), ex);
                ShowErrorDialog(output_folder, dialog,
                                Catalog.GetString("Unknown error."));
                return;
            } finally {
                if (dialog != null)
                {
                    dialog.Destroy();
                    dialog = null;
                }
            }
        }