private void BtnExport2TxtClick(object sender, RoutedEventArgs e) { var mc = dg_Categories.SelectedItem as CategoryModel; var cl = new List <CategoryModel>(); cl.Add(mc); var sc = new SourceGenerator(cl); var slist = sc.PrintPeripheryForCategory(mc.Name); var outWindow = new TextBufferView(slist); outWindow.Show(); }