/// <summary> /// Opens a file with saved data. /// </summary> private async Task OpenImpl() { var dialogResult = await _fileDialogService.ShowOpenDialogAsync(); if (dialogResult is null) { return; } try { _saveLoadManager.Open(dialogResult); } catch (Exception ex) { string message = ex switch { JsonReaderException _ => "The selected file is not a valid JSON file.", UnauthorizedAccessException _ => "The file cannot be read. Check the permissions on the selected file.", _ => ex.Message }; await OpenErrorBox(message); } }