■ RefreshContainer 클래스의 RefreshRequested 이벤트/RequestRefresh 메소드를 사용해 목록을 갱신하는 방법을 보여준다.
※ 비주얼 스튜디오에서 TestProject(Unpackaged) 모드로 빌드한다.
※ TestProject.csproj 프로젝트 파일에서 WindowsPackageType 태그를 None으로 추가했다.
▶ SampleItem.cs
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namespace TestProject; /// <summary> /// 샘플 항목 /// </summary> public class SampleItem { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 헤더 - Header /// <summary> /// 헤더 /// </summary> public string Header { get; set; } #endregion #region 일자 - Date /// <summary> /// 일자 /// </summary> public string Date { get; set; } #endregion #region 본문 - Body /// <summary> /// 본문 /// </summary> public string Body { get; set; } #endregion } |
▶ 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" xmlns:local="using:TestProject" Background="{ThemeResource ApplicationPageBackgroundThemeBrush}" FontFamily="나눔고딕코딩" FontSize="16"> <StackPanel HorizontalAlignment="Center" VerticalAlignment="Center" Width="300"> <CommandBar OverflowButtonVisibility="Collapsed"> <AppBarButton Name="refreshButton" VerticalAlignment="Center" Icon="Refresh" Label="Refresh" /> <CommandBar.Content> <TextBlock Style="{StaticResource TitleTextBlockStyle}" VerticalAlignment="Center" Text="List of items" /> </CommandBar.Content> </CommandBar> <RefreshContainer Name="refreshContainer"> <ListView Name="listView" Height="400" BorderThickness="1" BorderBrush="DarkGray" Padding="10"> <ListView.ItemTemplate> <DataTemplate x:DataType="local:SampleItem"> <Grid Height="80"> <Grid.RowDefinitions> <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" /> <RowDefinition Height="*" /> </Grid.RowDefinitions> <TextBlock Grid.Row="0" Style="{StaticResource SubtitleTextBlockStyle}" Text="{x:Bind Path=Header}" /> <TextBlock Grid.Row="1" Style="{StaticResource CaptionTextBlockStyle}" Margin="0 5 0 0" Text="{x:Bind Path=Date}" /> <TextBlock Grid.Row="2" Style="{StaticResource BodyTextBlockStyle}" Margin="0 5 0 0" Text="{x:Bind Path=Body}" /> </Grid> </DataTemplate> </ListView.ItemTemplate> </ListView> </RefreshContainer> </StackPanel> </Page> |
▶ MainPage.xaml.cs
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using System; using System.Collections.ObjectModel; using System.Threading.Tasks; using Windows.Foundation; using Microsoft.UI.Xaml; using Microsoft.UI.Xaml.Controls; namespace TestProject; /// <summary> /// 메인 페이지 /// </summary> public sealed partial class MainPage : Page { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 샘플 항목 컬렉션 - SampleItemCollection /// <summary> /// 샘플 항목 컬렉션 /// </summary> public ObservableCollection<SampleItem> SampleItemCollection { get; set; } = new ObservableCollection<SampleItem>(); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainPage() /// <summary> /// 생성자 /// </summary> public MainPage() { InitializeComponent(); this.listView.ItemsSource = SampleItemCollection; Loaded += Page_Loaded; this.refreshButton.Click += refreshButton_Click; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 페이지 로드시 처리하기 - Page_Loaded(sender, e) /// <summary> /// 페이지 로드시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private async void Page_Loaded(object sender, RoutedEventArgs e) { Loaded -= Page_Loaded; this.refreshContainer.RefreshRequested += refreshContainer_RefreshRequested; this.refreshContainer.Visualizer.RefreshStateChanged += visualizer_RefreshStateChanged; await FetchAndInsertSampleItemAsync(2); } #endregion #region 리프레쉬 버튼 클릭시 처리하기 - refreshButton_Click(sender, e) /// <summary> /// 리프레쉬 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void refreshButton_Click(object sender, RoutedEventArgs e) { this.refreshContainer.RequestRefresh(); } #endregion #region 리프레쉬 컨테이너 갱신 요구시 처리하기 - refreshContainer_RefreshRequested(sender, e) /// <summary> /// 리프레쉬 컨테이너 갱신 요구시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private async void refreshContainer_RefreshRequested(RefreshContainer sender, RefreshRequestedEventArgs e) { using(Deferral deferral = e.GetDeferral()) { await FetchAndInsertSampleItemAsync(3); } } #endregion #region 비주얼라이저 갱신 상태 변경시 처리하기 - visualizer_RefreshStateChanged(sender, e) /// <summary> /// 비주얼라이저 갱신 상태 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void visualizer_RefreshStateChanged(RefreshVisualizer sender, RefreshStateChangedEventArgs e) { if(e.NewState == RefreshVisualizerState.Refreshing) { this.refreshButton.IsEnabled = false; } else { this.refreshButton.IsEnabled = true; } } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 다음 샘플 항목 구하기 - GetNextSampleItem() /// <summary> /// 다음 샘플 항목 구하기 /// </summary> /// <returns>다음 샘플 항목</returns> private SampleItem GetNextSampleItem() { return new SampleItem() { Header = $"Header {DateTime.Now.Second}", Date = DateTime.Now.ToLongDateString(), Body = DateTime.Now.ToLongTimeString() }; } #endregion #region 샘플 항목 삽입/조회하기 (비동기) - FetchAndInsertSampleItemAsync(updateCount) /// <summary> /// 샘플 항목 삽입/조회하기 (비동기) /// </summary> /// <param name="updateCount">업데이트 수</param> /// <returns>태스크</returns> private async Task FetchAndInsertSampleItemAsync(int updateCount) { for(int i = 0; i < updateCount; ++i) { await Task.Delay(1000); SampleItemCollection.Insert(0, GetNextSampleItem()); } } #endregion } |
