private void LoadLibraryCollection() { LibraryCollection.Clear(); ContainerLibraries.Visibility = Visibility.Visible; ItemCollection.Clear(); ContainerMovies.Visibility = Visibility.Collapsed; CastCollection.Clear(); ContainerCast.Visibility = Visibility.Collapsed; MainGrid.RowDefinitions[2].Height = new GridLength(0); lvLibrarySections.ItemsSource = null; foreach (DataRow row in Database.GetLibrarySections().Rows) { LibraryCollection.Add(new Library() { id = long.Parse(row["id"].ToString()), name = row["name"].ToString() }); } lvLibrarySections.ItemsSource = LibraryCollection; }