private void GuidesDeleteItem(object SelectedItem)
        {
            DialogParameters param = new DialogParameters
            {
                { "message", "Удалить выбранный элемент?" }
            };

            _currentDialogService.ShowDialog("MessageBox", param, r =>
            {
                if (r.Result == ButtonResult.OK)
                {
                    SessionsHelper.GuidesItemDelete(SelectedItem as IGuidesItem);
                    GuidesDataItems = SessionsHelper.GetDataGridGuidesItems(GuidesMenuSelectedItem);
                }
            });
        }