■ GroupStyle 엘리먼트 : HeaderTemplate 속성을 사용해 ListBox 객체에서 그룹 스타일을 설정하는 방법을 보여준다.
▶ 예제 코드 (XAML)
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... <ListBox Name="listBox"> <ListBox.ItemTemplate> ... </ListBox.ItemTemplate> <ListBox.GroupStyle> <GroupStyle> <GroupStyle.HeaderTemplate> <DataTemplate> <TextBlock Margin="6" Foreground="White" Background="DarkGray" FontWeight="Bold" FontSize="12pt" Text="{Binding Path=Name}" /> </DataTemplate> </GroupStyle.HeaderTemplate> </GroupStyle> </ListBox.GroupStyle> </ListBox> ... |
▶ 예제 코드 (C#)
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using System; using System.Collections.ObjectModel; using System.ComponentModel; using System.Globalization; using System.Windows.Data; ... /// <summary> /// 기간 그룹 설명자 /// </summary> public class PeriodGroupDescription : GroupDescription { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 항목에서 그룹 명칭 구하기 - GroupNameFromItem(item, level, cultureInfo) /// <summary> /// 항목에서 그룹 명칭 구하기 /// </summary> /// <param name="item">항목</param> /// <param name="level">레벨</param> /// <param name="cultureInfo">CultureInfo 객체</param> /// <returns>그룹 명칭</returns> public override object GroupNameFromItem(object item, int level, CultureInfo cultureInfo) { Person person = item as Person; if(person.BirthDate == null) { return "Unknown"; } int year = ((DateTime)person.BirthDate).Year; if(year < 1575) return "Pre-Baroque"; if(year < 1725) return "Baroque"; if(year < 1795) return "Classical"; if(year < 1870) return "Romantic"; if(year < 1910) return "20th Century"; return "Post-War"; } #endregion } ... ObservableCollection<Person> observableCollection = new ObservableCollection<Person>(); ... ListCollectionView listCollectionView = new ListCollectionView(observableCollection); listCollectionView.SortDescriptions.Add(new SortDescription("BirthDate", ListSortDirection.Ascending)); listCollectionView.GroupDescriptions.Add(new PeriodGroupDescription()); ... this.listBox.ItemsSource = listCollectionView; if(this.listBox.Items.Count > 0) { this.listBox.SelectedIndex = 0; } |