■ ListViewExtensions 클래스의 SmoothScrollIntoViewWithIndexAsync 확장 메소드를 사용해 항목 스크롤시 애니메이션을 처리하는 방법을 보여준다.
※ 비주얼 스튜디오에서 TestProject(Unpackaged) 모드로 빌드한다.
※ TestProject.csproj 프로젝트 파일에서 WindowsPackageType 태그를 None으로 추가했다.
▶ MainPage.xaml
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<?xml version="1.0" encoding="utf-8"?> <Page x:Class="TestProject.MainPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Background="{ThemeResource ApplicationPageBackgroundThemeBrush}" FontFamily="나눔고딕코딩" FontSize="16"> <ListView Name="listView" Width="400" Height="400" BorderThickness="1" BorderBrush="Black" ScrollViewer.HorizontalScrollMode="Enabled" ScrollViewer.HorizontalScrollBarVisibility="Visible" ItemsSource="{x:Bind ItemCollection, Mode=OneWay}"> <ListView.ItemsPanel> <ItemsPanelTemplate> <StackPanel Orientation="Horizontal" /> </ItemsPanelTemplate> </ListView.ItemsPanel> </ListView> </Page> |
▶ MainPage.xaml.cs
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using System.Collections.ObjectModel; using Microsoft.UI.Xaml.Controls; using CommunityToolkit.WinUI; namespace TestProject; /// <summary> /// 메인 페이지 /// </summary> public sealed partial class MainPage : Page { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 항목 컬렉션 - ItemCollection /// <summary> /// 항목 컬렉션 /// </summary> public ObservableCollection<string> ItemCollection { get; set; } = []; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainPage() /// <summary> /// 생성자 /// </summary> public MainPage() { InitializeComponent(); this.listView.SelectionChanged += listView_SelectionChanged; ItemCollection = GetItemCollection(200); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 리스트 뷰 선택 변경시 처리하기 - listView_SelectionChanged(sender, e) /// <summary> /// 리스트 뷰 선택 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private async void listView_SelectionChanged(object sender, SelectionChangedEventArgs e) { if(sender is ListView listView) { await listView.SmoothScrollIntoViewWithIndexAsync(listView.SelectedIndex, ScrollItemPlacement.Center, false, true); } } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 항목 컬렉션 구하기 - GetItemCollection(itemCount) /// <summary> /// 항목 컬렉션 구하기 /// </summary> /// <param name="itemCount">항목 수</param> /// <returns>항목 컬렉션</returns> private ObservableCollection<string> GetItemCollection(int itemCount) { ObservableCollection<string> collection = []; for(int i = 0; i < itemCount; i++) { string item = (i % 2) == 0 ? $"{i} - Even" : $"{i} - Odd"; collection.Add(item); } return collection; } #endregion } |
