■ IRegionMemberLifetime 인터페이스의 KeepAlive 속성을 사용해 메모리에서 자동으로 뷰를 제거하는 방법을 보여준다.
[TestLibrary 프로젝트]
▶ ViewA.xaml
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<UserControl x:Class="TestLibrary.Views.ViewA" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:prism="http://prismlibrary.com/" prism:ViewModelLocator.AutoWireViewModel="True"> <Grid> <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="48" Text="View A" /> </Grid> </UserControl> |
▶ ViewA.xaml.cs
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using System.Windows.Controls; namespace TestLibrary.Views { /// <summary> /// 뷰 A /// </summary> public partial class ViewA : UserControl { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - ViewA() /// <summary> /// 생성자 /// </summary> public ViewA() { InitializeComponent(); } #endregion } } |
▶ ViewAViewModel.cs
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using Prism.Mvvm; using Prism.Regions; namespace TestLibrary.ViewModels { /// <summary> /// 뷰 A 뷰 모델 /// </summary> public class ViewAViewModel : BindableBase, INavigationAware, IRegionMemberLifetime { //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생존 유지 여부 - KeepAlive /// <summary> /// 생존 유지 여부 /// </summary> public bool KeepAlive { get { return false; } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - ViewAViewModel() /// <summary> /// 생성자 /// </summary> public ViewAViewModel() { } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 탐색 타겟 여부 구하기 - IsNavigationTarget(navigationContext) /// <summary> /// 탐색 타겟 여부 구하기 /// </summary> /// <param name="navigationContext">탐색 컨텍스트</param> /// <returns>탐색 타겟 여부</returns> public bool IsNavigationTarget(NavigationContext navigationContext) { return false; } #endregion #region 탐색 진입시 처리하기 - OnNavigatedTo(navigationContext) /// <summary> /// 탐색 진입시 처리하기 /// </summary> /// <param name="navigationContext">탐색 컨텍스트</param> public void OnNavigatedTo(NavigationContext navigationContext) { } #endregion #region 탐색 이탈시 처리하기 - OnNavigatedFrom(navigationContext) /// <summary> /// 탐색 이탈시 처리하기 /// </summary> /// <param name="navigationContext">탐색 컨텍스트</param> public void OnNavigatedFrom(NavigationContext navigationContext) { } #endregion } } |
▶ ViewB.xaml
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<UserControl x:Class="TestLibrary.Views.ViewB" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:prism="http://prismlibrary.com/" prism:ViewModelLocator.AutoWireViewModel="True"> <Grid> <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="48" Text="View B" /> </Grid> </UserControl> |
▶ ViewB.xaml.cs
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using System.Windows.Controls; namespace TestLibrary.Views { /// <summary> /// 뷰 B /// </summary> public partial class ViewB : UserControl { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - ViewB() /// <summary> /// 생성자 /// </summary> public ViewB() { InitializeComponent(); } #endregion } } |
▶ ViewBViewModel.cs
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using Prism.Mvvm; using Prism.Regions; namespace TestLibrary.ViewModels { /// <summary> /// 뷰 B 뷰 모델 /// </summary> public class ViewBViewModel : BindableBase, INavigationAware { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - ViewBViewModel() /// <summary> /// 생성자 /// </summary> public ViewBViewModel() { } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 탐색 타겟 여부 구하기 - IsNavigationTarget(navigationContext) /// <summary> /// 탐색 타겟 여부 구하기 /// </summary> /// <param name="navigationContext">탐색 컨텍스트</param> /// <returns>탐색 타겟 여부</returns> public bool IsNavigationTarget(NavigationContext navigationContext) { return false; } #endregion #region 탐색 진입시 처리하기 - OnNavigatedTo(navigationContext) /// <summary> /// 탐색 진입시 처리하기 /// </summary> /// <param name="navigationContext">탐색 컨텍스트</param> public void OnNavigatedTo(NavigationContext navigationContext) { } #endregion #region 탐색 이탈시 처리하기 - OnNavigatedFrom(navigationContext) /// <summary> /// 탐색 이탈시 처리하기 /// </summary> /// <param name="navigationContext">탐색 컨텍스트</param> public void OnNavigatedFrom(NavigationContext navigationContext) { } #endregion } } |
▶ TestLibraryModule.cs
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using Prism.Ioc; using Prism.Modularity; using TestLibrary.Views; namespace TestLibrary { /// <summary> /// 테스트 라이브러리 모듈 /// </summary> public class TestLibraryModule : IModule { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 초기화시 처리하기 - OnInitialized(containerProvider) /// <summary> /// 초기화시 처리하기 /// </summary> /// <param name="containerProvider">컨테이너 공급자</param> public void OnInitialized(IContainerProvider containerProvider) { } #endregion #region 타입 등록하기 - RegisterTypes(containerRegistry) /// <summary> /// 타입 등록하기 /// </summary> /// <param name="containerRegistry">컨테이너 레지스트리 인터페이스</param> public void RegisterTypes(IContainerRegistry containerRegistry) { containerRegistry.RegisterForNavigation<ViewA>(); containerRegistry.RegisterForNavigation<ViewB>(); } #endregion } } |
[TestProject 프로젝트]
▶ MainWindow.xaml
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<Window x:Class="TestProject.Views.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:prism="http://prismlibrary.com/" prism:ViewModelLocator.AutoWireViewModel="True" Width="800" Height="600" Title="{Binding Title}" FontFamily="나눔고딕코딩" FontSize="16"> <DockPanel LastChildFill="True"> <StackPanel DockPanel.Dock="Top" Margin="5" Orientation="Horizontal"> <Button Margin="10" Padding="5" Command="{Binding NavigateCommand}" CommandParameter="ViewA" Content="Navigate to View A" /> <Button Margin="10" Padding="5" Command="{Binding NavigateCommand}" CommandParameter="ViewB" Content="Navigate to View B" /> </StackPanel> <ItemsControl Margin="5" ItemsSource="{Binding ViewCollection}"> <ItemsControl.ItemTemplate> <DataTemplate> <Border Margin="2" Height="50" Width="50" Background="LightBlue"> <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" FontWeight="Bold" Text="{Binding}" /> </Border> </DataTemplate> </ItemsControl.ItemTemplate> </ItemsControl> <ContentControl prism:RegionManager.RegionName="ContentRegion" Margin="5" /> </DockPanel> </Window> |
▶ MainWindow.xaml.cs
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using System.Windows; namespace TestProject.Views { /// <summary> /// 메인 윈도우 /// </summary> public partial class MainWindow : Window { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindow() /// <summary> /// 생성자 /// </summary> public MainWindow() { InitializeComponent(); } #endregion } } |
▶ MainWindowViewModel.cs
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using System.Collections.ObjectModel; using System.Collections.Specialized; using Prism.Commands; using Prism.Mvvm; using Prism.Regions; namespace TestProject.ViewModels { /// <summary> /// 메인 윈도우 뷰 모델 /// </summary> public class MainWindowViewModel : BindableBase { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 영역 관리자 인터페이스 /// </summary> private readonly IRegionManager regionManager; /// <summary> /// 제목 /// </summary> private string title = "IRegionMemberLifetime 인터페이스 : KeepAlive 속성을 사용해 메모리에서 자동으로 뷰 제거하기"; /// <summary> /// 뷰 컬렉션 /// </summary> private ObservableCollection<object> viewCollection = new ObservableCollection<object>(); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 제목 - Title /// <summary> /// 제목 /// </summary> public string Title { get { return this.title; } set { SetProperty(ref this.title, value); } } #endregion #region 뷰 컬렉션 - ViewCollection /// <summary> /// 뷰 컬렉션 /// </summary> public ObservableCollection<object> ViewCollection { get { return this.viewCollection; } set { SetProperty(ref this.viewCollection, value); } } #endregion #region 탐색 명령 - NavigateCommand /// <summary> /// 탐색 명령 /// </summary> public DelegateCommand<string> NavigateCommand { get; private set; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindowViewModel(regionManager) /// <summary> /// 생성자 /// </summary> /// <param name="regionManager">영역 관리자 인터페이스</param> public MainWindowViewModel(IRegionManager regionManager) { this.regionManager = regionManager; this.regionManager.Regions.CollectionChanged += regionCollection_CollectionChanged; NavigateCommand = new DelegateCommand<string>(Navigate); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 뷰 컬렉션 컬렉션 변경시 처리하기 - viewCollection_CollectionChanged(sender, e) /// <summary> /// 뷰 컬렉션 컬렉션 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void viewCollection_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e) { if(e.Action == NotifyCollectionChangedAction.Add) { ViewCollection.Add(e.NewItems[0].GetType().Name); } else if (e.Action == NotifyCollectionChangedAction.Remove) { ViewCollection.Remove(e.OldItems[0].GetType().Name); } } #endregion #region 영역 컬렉션 컬렉션 변경시 처리하기 - regionCollection_CollectionChanged(sender, e) /// <summary> /// 영역 컬렉션 컬렉션 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void regionCollection_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e) { if(e.Action == NotifyCollectionChangedAction.Add) { IRegion region = e.NewItems[0] as IRegion; region.Views.CollectionChanged += viewCollection_CollectionChanged; } } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 탐색하기 - Navigate(navigatePath) /// <summary> /// 탐색하기 /// </summary> /// <param name="navigatePath">탐색 경로</param> private void Navigate(string navigatePath) { if(navigatePath != null) { regionManager.RequestNavigate("ContentRegion", navigatePath); } } #endregion } } |
▶ MainApplication.xaml
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<prism:PrismApplication x:Class="TestProject.MainApplication" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:prism="http://prismlibrary.com/"> </prism:PrismApplication> |
▶ MainApplication.xaml.cs
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using System.Windows; using Prism.Ioc; using Prism.Modularity; using Prism.Unity; using TestLibrary; using TestProject.Views; namespace TestProject { /// <summary> /// 메인 애플리케이션 /// </summary> public partial class MainApplication : PrismApplication { //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Protected #region 쉘 생성하기 - CreateShell() /// <summary> /// 쉘 생성하기 /// </summary> /// <returns>쉘</returns> protected override Window CreateShell() { return Container.Resolve<MainWindow>(); } #endregion #region 타입 등록하기 - RegisterTypes(containerRegistry) /// <summary> /// 타입 등록하기 /// </summary> /// <param name="containerRegistry">컨테이너 레지스트리 인터페이스</param> protected override void RegisterTypes(IContainerRegistry containerRegistry) { } #endregion #region 모듈 카탈로그 구성하기 - ConfigureModuleCatalog(moduleCatalog) /// <summary> /// 모듈 카탈로그 구성하기 /// </summary> /// <param name="moduleCatalog">모듈 카탈로그</param> protected override void ConfigureModuleCatalog(IModuleCatalog moduleCatalog) { moduleCatalog.AddModule<TestLibraryModule>(); } #endregion } } |
