■ DateTemplate 클래스의 FindName 메소드를 사용해 자식 객체를 구하는 방법을 보여준다.
▶ StudentModel.cs
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using System.Collections.Generic; namespace TestProject { /// <summary> /// 학생 모델 /// </summary> public class StudentModel { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region ID - ID /// <summary> /// ID /// </summary> public int ID { get; set; } #endregion #region 성명 - NAME /// <summary> /// 성명 /// </summary> public string NAME { get; set; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region 학생 리스트 구하기 - GetStudentList(count) /// <summary> /// 학생 리스트 구하기 /// </summary> /// <param name="count">ㅅ학생 수</param> /// <returns>학생 리스트</returns> public static List<StudentModel> GetStudentList(int count) { List<StudentModel> list = new List<StudentModel>(); for(int i = 0; i < count; i++) { list.Add(new StudentModel { ID = i, NAME = $"학생{i}" }); } return list; } #endregion } } |
▶ MainWindow.xaml
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<Window x:Class="TestProject.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Width="800" Height="600" Title="DateTemplat 클래스 : 자식 객체 구하기" FontFamily="나눔고딕코딩" FontSize="16"> <Grid Margin="10"> <Grid.RowDefinitions> <RowDefinition Height="*" /> <RowDefinition Height="10" /> <RowDefinition Height="Auto" /> </Grid.RowDefinitions> <ListBox Name="listBox" Grid.Row="0"> <ListBox.ItemTemplate> <DataTemplate> <StackPanel Orientation="Horizontal"> <TextBlock Name="idTextBlock" Foreground="Red" TextAlignment="Right" Text="{Binding ID}" /> <TextBlock Name="nameTextBlock" Margin="20 0 0 0" Foreground="Blue" Text="{Binding NAME}" /> </StackPanel> </DataTemplate> </ListBox.ItemTemplate> </ListBox> <Button Name="button" Grid.Row="2" Width="100" Height="30" Content="테스트" /> </Grid> </Window> |
▶ MainWindow.xaml.cs
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using System.Windows; using System.Windows.Controls; using System.Windows.Media; namespace TestProject { /// <summary> /// 메인 윈도우 /// </summary> public partial class MainWindow : Window { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindow() /// <summary> /// 생성자 /// </summary> public MainWindow() { InitializeComponent(); this.listBox.ItemsSource = StudentModel.GetStudentList(10000); this.button.Click += button_Click; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 테스트 버튼 클릭시 처리하기 - button_Click(sender, e) /// <summary> /// 테스트 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void button_Click(object sender, RoutedEventArgs e) { ListBoxItem listBoxItem = this.listBox.ItemContainerGenerator.ContainerFromItem(this.listBox.SelectedItem) as ListBoxItem; if(listBoxItem == null) { return; } ContentPresenter contentPresenter = FindVisualChild<ContentPresenter>(listBoxItem); DataTemplate dataTemplate = contentPresenter.ContentTemplate; if(dataTemplate == null) { return; } TextBlock nameTextBlock = dataTemplate.FindName("nameTextBlock", contentPresenter) as TextBlock; if(nameTextBlock == null) { return; } nameTextBlock.Foreground = Brushes.DarkGreen; } #endregion //////////////////////////////////////////////////////////////////////////////// Event #region 비주얼 자식 구하기 - FindVisualChild<TChild>(parentObject) /// <summary> /// 비주얼 자식 구하기 /// </summary> /// <typeparam name="TChild">자식 타입</typeparam> /// <param name="parentObject">부모 객체</param> /// <returns>비주얼 자식</returns> private TChild FindVisualChild<TChild>(DependencyObject parentObject) where TChild : DependencyObject { for(int i = 0; i < VisualTreeHelper.GetChildrenCount(parentObject); i++) { DependencyObject child = VisualTreeHelper.GetChild(parentObject, i); if(child != null && child is TChild) { return (TChild)child; } else { TChild grandChild = FindVisualChild<TChild>(child); if(grandChild != null) { return grandChild; } } } return null; } #endregion } } |
