■ 비동기 가상화 컬렉션을 사용하는 방법을 보여준다.
▶ Customer.cs
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namespace TestProject { /// <summary> /// 고객 /// </summary> public class Customer { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 바이트 배열 /// </summary> /// <remarks>테스트를 위한 더미 데이터</remarks> private byte[] byteArray = new byte[100]; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// 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 } } |
▶ IItemProvider.cs
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using System.Collections.Generic; namespace TestProject { /// <summary> /// 항목 공급자 인터페이스 /// </summary> /// <typeparam name="TItem">항목 타입</typeparam> public interface IItemProvider<TItem> { //////////////////////////////////////////////////////////////////////////////////////////////////// Method #region 카운트 가져오기 - FetchCount() /// <summary> /// 카운트 가져오기 /// </summary> /// <returns>카운트</returns> int FetchCount(); #endregion #region 범위 가져오기 - FetchRange(startIndex, count) /// <summary> /// 범위 가져오기 /// </summary> /// <param name="startIndex">시작 인덱스</param> /// <param name="count">카운트</param> /// <returns>항목 리스트</returns> IList<TItem> FetchRange(int startIndex, int count); #endregion } } |
▶ CustomerProvider.cs
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using System.Collections.Generic; using System.Threading; namespace TestProject { /// <summary> /// 고객 공급자 /// </summary> public class CustomerProvider : IItemProvider<Customer> { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 카운트 /// </summary> private readonly int count; /// <summary> /// 페치 지연 시간 /// </summary> private readonly int fetchDelay; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - CustomerProvider(count, fetchDelay) /// <summary> /// 생성자 /// </summary> /// <param name="count">카운트</param> /// <param name="fetchDelay">페치 지연 시간</param> public CustomerProvider(int count, int fetchDelay) { this.count = count; this.fetchDelay = fetchDelay; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 카운트 가져오기 - FetchCount() /// <summary> /// 카운트 가져오기 /// </summary> /// <returns>카운트</returns> public int FetchCount() { Thread.Sleep(this.fetchDelay); return this.count; } #endregion #region 범위 가져오기 - FetchRange(startIndex, count) /// <summary> /// 범위 가져오기 /// </summary> /// <param name="startIndex">시작 인덱스</param> /// <param name="count">카운트</param> /// <returns>고객 리스트</returns> public IList<Customer> FetchRange(int startIndex, int count) { Thread.Sleep(this.fetchDelay); List<Customer> list = new List<Customer>(); for(int i = startIndex; i < startIndex + count; i++) { Customer customer = new Customer { ID = i + 1, Name = "고객 " + (i + 1) }; list.Add(customer); } return list; } #endregion } } |
▶ VirtualizingCollection.cs
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using System; using System.Collections; using System.Collections.Generic; namespace TestProject { /// <summary> /// 가상화 컬렉션 /// </summary> /// <typeparam name="TItem">항목 타입</typeparam> public class VirtualizingCollection<TItem> : IList<TItem>, IList { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 항목 공급자 /// </summary> private readonly IItemProvider<TItem> itemProvider; /// <summary> /// 페이지 크기 /// </summary> private readonly int pageSize = 100; /// <summary> /// 페이지 타임아웃 /// </summary> private readonly long pageTimeout = 10000; /// <summary> /// 카운트 /// </summary> private int count = -1; /// <summary> /// 페이지 딕셔너리 /// </summary> private readonly Dictionary<int, IList<TItem>> pageDictionary = new Dictionary<int, IList<TItem>>(); /// <summary> /// 페이지 터치 시간 딕셔너리 /// </summary> private readonly Dictionary<int, DateTime> pageTouchTimeDictionary = new Dictionary<int, DateTime>(); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 항목 공급자 - ItemProvider /// <summary> /// 항목 공급자 /// </summary> public IItemProvider<TItem> ItemProvider { get { return this.itemProvider; } } #endregion #region 페이지 크기 - PageSize /// <summary> /// 페이지 크기 /// </summary> public int PageSize { get { return this.pageSize; } } #endregion #region 페이지 타임아웃 - PageTimeout /// <summary> /// 페이지 타임아웃 /// </summary> public long PageTimeout { get { return this.pageTimeout; } } #endregion #region 카운트 - Count /// <summary> /// 카운트 /// </summary> public virtual int Count { get { if(this.count == -1) { LoadCount(); } return this.count; } protected set { this.count = value; } } #endregion #region 인덱서 - this[index] /// <summary> /// 인덱서 /// </summary> /// <param name="index">인덱스</param> /// <returns>항목</returns> public TItem this[int index] { get { int pageIndex = index / PageSize; int pageOffset = index % PageSize; RequestPage(pageIndex); if(pageOffset > PageSize / 2 && pageIndex < Count / PageSize) { RequestPage(pageIndex + 1); } if(pageOffset < PageSize / 2 && pageIndex > 0) { RequestPage(pageIndex - 1); } CleanUpPages(); if(this.pageDictionary[pageIndex] == null) { return default(TItem); } return this.pageDictionary[pageIndex][pageOffset]; } set { throw new NotSupportedException(); } } #endregion #region 동기 루트 - SyncRoot /// <summary> /// 동기 루트 /// </summary> public object SyncRoot { get { return this; } } #endregion #region 동기화 여부 - IsSynchronized /// <summary> /// 동기화 여부 /// </summary> public bool IsSynchronized { get { return false; } } #endregion #region 읽기 전용 여부 - IsReadOnly /// <summary> /// 읽기 전용 여부 /// </summary> public bool IsReadOnly { get { return true; } } #endregion #region 고정 크기 여부 - IsFixedSize /// <summary> /// 고정 크기 여부 /// </summary> public bool IsFixedSize { get { return false; } } #endregion #region (IList) 인덱서 - this[index] /// <summary> /// 인덱서 /// </summary> /// <param name="index">인덱스</param> /// <returns>항목</returns> object IList.this[int index] { get { return this[index]; } set { throw new NotSupportedException(); } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - VirtualizingCollection(itemProvider) /// <summary> /// 생성자 /// </summary> /// <param name="itemProvider">항목 공급자</param> public VirtualizingCollection(IItemProvider<TItem> itemProvider) { this.itemProvider = itemProvider; } #endregion #region 생성자 - VirtualizingCollection(itemProvider, pageSize) /// <summary> /// 생성자 /// </summary> /// <param name="itemProvider">항목 공급자</param> /// <param name="pageSize">페이지 크기</param> public VirtualizingCollection(IItemProvider<TItem> itemProvider, int pageSize) { this.itemProvider = itemProvider; this.pageSize = pageSize; } #endregion #region 생성자 - VirtualizingCollection(itemProvider, pageSize, pageTimeout) /// <summary> /// 생성자 /// </summary> /// <param name="itemProvider">항목 공급자</param> /// <param name="pageSize">페이지 크기</param> /// <param name="pageTimeout">페이지 타임아웃</param> public VirtualizingCollection(IItemProvider<TItem> itemProvider, int pageSize, int pageTimeout) { this.itemProvider = itemProvider; this.pageSize = pageSize; this.pageTimeout = pageTimeout; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 페이지들 지우기 - CleanUpPages() /// <summary> /// 페이지들 지우기 /// </summary> public void CleanUpPages() { List<int> keyList = new List<int>(this.pageTouchTimeDictionary.Keys); foreach(int key in keyList) { if(key != 0 && (DateTime.Now - this.pageTouchTimeDictionary[key]).TotalMilliseconds > PageTimeout) { this.pageDictionary.Remove(key); this.pageTouchTimeDictionary.Remove(key); } } } #endregion #region 열거자 구하기 - GetEnumerator() /// <summary> /// 열거자 구하기 /// </summary> /// <returns>열거자</returns> public IEnumerator<TItem> GetEnumerator() { for(int i = 0; i < Count; i++) { yield return this[i]; } } #endregion #region 포함 여부 구하기 - Contains(item) /// <summary> /// 포함 여부 구하기 /// </summary> /// <param name="item">항목</param> /// <returns>포함 여부</returns> public bool Contains(TItem item) { return false; } #endregion #region 추가하기 - Add(item) /// <summary> /// 추가하기 /// </summary> /// <param name="item">항목</param> public void Add(TItem item) { throw new NotSupportedException(); } #endregion #region 삽입하기 - Insert(index, item) /// <summary> /// 삽입하기 /// </summary> /// <param name="index">인덱스</param> /// <param name="item">항목</param> public void Insert(int index, TItem item) { throw new NotSupportedException(); } #endregion #region 인덱스 구하기 - IndexOf(item) /// <summary> /// 인덱스 구하기 /// </summary> /// <param name="item">항목</param> /// <returns>인덱스</returns> public int IndexOf(TItem item) { return -1; } #endregion #region 제거하기 - RemoveAt(index) /// <summary> /// 제거하기 /// </summary> /// <param name="index">인덱스</param> public void RemoveAt(int index) { throw new NotSupportedException(); } #endregion #region 제거하기 - Remove(item) /// <summary> /// 제거하기 /// </summary> /// <param name="item">항목</param> /// <returns>처리 결과</returns> public bool Remove(TItem item) { throw new NotSupportedException(); } #endregion #region 지우기 - Clear() /// <summary> /// 지우기 /// </summary> public void Clear() { throw new NotSupportedException(); } #endregion #region 복사하기 - CopyTo(itemArray, arrayIndex) /// <summary> /// 복사하기 /// </summary> /// <param name="itemArray">항목 배열</param> /// <param name="arrayIndex">배열 인덱스</param> public void CopyTo(TItem[] itemArray, int arrayIndex) { throw new NotSupportedException(); } #endregion #region (IEnumerable) 열거자 구하기 - GetEnumerator() /// <summary> /// 열거자 구하기 /// </summary> /// <returns>열거자</returns> IEnumerator IEnumerable.GetEnumerator() { return GetEnumerator(); } #endregion #region (IList) 포함 여부 구하기 - Contains(value) /// <summary> /// 포함 여부 구하기 /// </summary> /// <param name="value">값</param> /// <returns>포함 여부</returns> bool IList.Contains(object value) { return Contains((TItem)value); } #endregion #region (IList) 추가하기 - Add(value) /// <summary> /// 추가하기 /// </summary> /// <param name="value">값</param> /// <returns>인덱스</returns> int IList.Add(object value) { throw new NotSupportedException(); } #endregion #region (IList) 삽입하기 - Insert(index, value) /// <summary> /// 삽입하기 /// </summary> /// <param name="index">인덱스</param> /// <param name="value">값</param> void IList.Insert(int index, object value) { Insert(index, (TItem)value); } #endregion #region (IList) 인덱스 구하기 - IndexOf(value) /// <summary> /// 인덱스 구하기 /// </summary> /// <param name="value">값</param> /// <returns>인덱스</returns> int IList.IndexOf(object value) { return IndexOf((TItem) value); } #endregion #region (IList) 제거하기 - Remove(value) /// <summary> /// 제거하기 /// </summary> /// <param name="value">값</param> void IList.Remove(object value) { throw new NotSupportedException(); } #endregion #region (ICollection) 복사하기 - CopyTo(array, index) /// <summary> /// 복사하기 /// </summary> /// <param name="array">배열</param> /// <param name="index">인덱스</param> void ICollection.CopyTo(Array array, int index) { throw new NotSupportedException(); } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Protected #region 카운트 가져오기 - FetchCount() /// <summary> /// 카운트 가져오기 /// </summary> /// <returns>카운트</returns> protected int FetchCount() { return ItemProvider.FetchCount(); } #endregion #region 카운트 로드하기 - LoadCount() /// <summary> /// 카운트 로드하기 /// </summary> protected virtual void LoadCount() { Count = FetchCount(); } #endregion #region 페이지 채우기 - PopulatePage(pageIndex, itemList) /// <summary> /// 페이지 채우기 /// </summary> /// <param name="pageIndex">페이지 인덱스</param> /// <param name="itemList">항목 리스트</param> protected virtual void PopulatePage(int pageIndex, IList<TItem> itemList) { if(this.pageDictionary.ContainsKey(pageIndex)) { this.pageDictionary[pageIndex] = itemList; } } #endregion #region 페이지 가져오기 - FetchPage(pageIndex) /// <summary> /// 페이지 가져오기 /// </summary> /// <param name="pageIndex">페이지 인덱스</param> /// <returns>항목 리스트</returns> protected IList<TItem> FetchPage(int pageIndex) { return ItemProvider.FetchRange(pageIndex * PageSize, PageSize); } #endregion #region 페이지 로드하기 - LoadPage(pageIndex) /// <summary> /// 페이지 로드하기 /// </summary> /// <param name="pageIndex">페이지 인덱스</param> protected virtual void LoadPage(int pageIndex) { PopulatePage(pageIndex, FetchPage(pageIndex)); } #endregion #region 페이지 요청하기 - RequestPage(pageIndex) /// <summary> /// 페이지 요청하기 /// </summary> /// <param name="pageIndex">페이지 인덱스</param> protected virtual void RequestPage(int pageIndex) { if(!this.pageDictionary.ContainsKey(pageIndex)) { this.pageDictionary.Add(pageIndex, null); this.pageTouchTimeDictionary.Add(pageIndex, DateTime.Now); LoadPage(pageIndex); } else { this.pageTouchTimeDictionary[pageIndex] = DateTime.Now; } } #endregion } } |
▶ AsyncVirtualizingCollection.cs
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using System.Collections.Generic; using System.Collections.Specialized; using System.ComponentModel; using System.Threading; namespace TestProject { /// <summary> /// 비동기 가상화 컬렉션 /// </summary> /// <typeparam name="TItem">항목 타입</typeparam> public class AsyncVirtualizingCollection<TItem> : VirtualizingCollection<TItem>, INotifyCollectionChanged, INotifyPropertyChanged { //////////////////////////////////////////////////////////////////////////////////////////////////// Event ////////////////////////////////////////////////////////////////////////////////////////// Public #region 속성 변경시 이벤트 - PropertyChanged /// <summary> /// 속성 변경시 이벤트 /// </summary> public event PropertyChangedEventHandler PropertyChanged; #endregion #region 컬렉션 변경시 이벤트 - CollectionChanged /// <summary> /// 컬렉션 변경시 이벤트 /// </summary> public event NotifyCollectionChangedEventHandler CollectionChanged; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 동기화 컨텍스트 /// </summary> private readonly SynchronizationContext synchronizationContext; /// <summary> /// 로딩 여부 /// </summary> private bool isLoading; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Protected #region 동기화 컨텍스트 - SynchronizationContext /// <summary> /// 동기화 컨텍스트 /// </summary> protected SynchronizationContext SynchronizationContext { get { return this.synchronizationContext; } } #endregion #region 로딩 여부 - IsLoading /// <summary> /// 로딩 여부 /// </summary> public bool IsLoading { get { return this.isLoading; } set { if(value != this.isLoading) { this.isLoading = value; } FirePropertyChangedEvent("IsLoading"); } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - AsyncVirtualizingCollection(itemProvider) /// <summary> /// 생성자 /// </summary> /// <param name="itemProvider">항목 공급자</param> public AsyncVirtualizingCollection(IItemProvider<TItem> itemProvider) : base(itemProvider) { this.synchronizationContext = SynchronizationContext.Current; } #endregion #region 생성자 - AsyncVirtualizingCollection(itemProvider, pageSize) /// <summary> /// 생성자 /// </summary> /// <param name="itemProvider">항목 공급자</param> /// <param name="pageSize">페이지 크기</param> public AsyncVirtualizingCollection(IItemProvider<TItem> itemProvider, int pageSize) : base(itemProvider, pageSize) { this.synchronizationContext = SynchronizationContext.Current; } #endregion #region 생성자 - AsyncVirtualizingCollection(itemProvider, pageSize, pageTimeout) /// <summary> /// 생성자 /// </summary> /// <param name="itemProvider">항목 공급자</param> /// <param name="pageSize">페이지 크기</param> /// <param name="pageTimeout">페이지 타임아웃</param> public AsyncVirtualizingCollection(IItemProvider<TItem> itemProvider, int pageSize, int pageTimeout) : base(itemProvider, pageSize, pageTimeout) { this.synchronizationContext = SynchronizationContext.Current; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Protected #region 속성 변경시 이벤트 발생시키기 - FirePropertyChangedEvent(e) /// <summary> /// 속성 변경시 이벤트 발생시키기 /// </summary> /// <param name="e">이벤트 인자</param> protected virtual void FirePropertyChangedEvent(PropertyChangedEventArgs e) { PropertyChanged?.Invoke(this, e); } #endregion #region 컬렉션 변경시 이벤트 발생시키기 - FireCollectionChangedEvent(e) /// <summary> /// 컬렉션 변경시 이벤트 발생시키기 /// </summary> /// <param name="e">이벤트 인자</param> protected virtual void FireCollectionChangedEvent(NotifyCollectionChangedEventArgs e) { CollectionChanged?.Invoke(this, e); } #endregion #region 카운트 로드하기 - LoadCount() /// <summary> /// 카운트 로드하기 /// </summary> protected override void LoadCount() { Count = 0; IsLoading = true; ThreadPool.QueueUserWorkItem(LoadCount); } #endregion #region 페이지 로드하기 - LoadPage(index) /// <summary> /// 페이지 로드하기 /// </summary> /// <param name="index">인덱스</param> protected override void LoadPage(int index) { IsLoading = true; ThreadPool.QueueUserWorkItem(LoadPage, index); } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Private #region 속성 변경시 이벤트 발생시키기 - FirePropertyChangedEvent(propertyName) /// <summary> /// 속성 변경시 이벤트 발생시키기 /// </summary> /// <param name="propertyName">속성명</param> private void FirePropertyChangedEvent(string propertyName) { FirePropertyChangedEvent(new PropertyChangedEventArgs(propertyName)); } #endregion #region 컬렉션 변경시 리셋 이벤트 발생시키기 - FireCollectionChangedResetEvent() /// <summary> /// 컬렉션 변경시 리셋 이벤트 발생시키기 /// </summary> private void FireCollectionChangedResetEvent() { FireCollectionChangedEvent(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset)); } #endregion #region 카운트 로드하기 - LoadCount(argument) /// <summary> /// 카운트 로드하기 /// </summary> /// <param name="argument">인자</param> private void LoadCount(object argument) { int count = FetchCount(); SynchronizationContext.Send(LoadCountCompleted, count); } #endregion #region 카운트 로드 완료시 처리하기 - LoadCountCompleted(argument) /// <summary> /// 카운트 로드 완료시 처리하기 /// </summary> /// <param name="argument">인자</param> private void LoadCountCompleted(object argument) { Count = (int)argument; IsLoading = false; FireCollectionChangedResetEvent(); } #endregion #region 페이지 로드하기 - LoadPage(argument) /// <summary> /// 페이지 로드하기 /// </summary> /// <param name="argument">인자</param> private void LoadPage(object argument) { int pageIndex = (int)argument; IList<TItem> itemList = FetchPage(pageIndex); SynchronizationContext.Send(LoadPageCompleted, new object[]{ pageIndex, itemList }); } #endregion #region 페이지 로드 완료시 처리하기 - LoadPageCompleted(argument) /// <summary> /// 페이지 로드 완료시 처리하기 /// </summary> /// <param name="argument">인자</param> private void LoadPageCompleted(object argument) { int pageIndex = (int)((object[]) argument)[0]; IList<TItem> itemList = (IList<TItem>)((object[])argument)[1]; PopulatePage(pageIndex, itemList); IsLoading = false; FireCollectionChangedResetEvent(); } #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="비동기 가상화 컬렉션 사용하기" FontFamily="나눔고딕코딩" FontSize="16"> <Window.Resources> <Style x:Key="ListViewStyleKey" TargetType="{x:Type ListView}"> <Setter Property="VirtualizingStackPanel.IsVirtualizing" Value="True" /> <Setter Property="VirtualizingStackPanel.VirtualizationMode" Value="Recycling" /> <Setter Property="ScrollViewer.IsDeferredScrollingEnabled" Value="True" /> <Setter Property="ListView.ItemsSource" Value="{Binding}" /> <Setter Property="ListView.View"> <Setter.Value> <GridView> <GridViewColumn Header="ID" Width="100"> <GridViewColumn.CellTemplate> <DataTemplate> <TextBlock Text="{Binding ID}" /> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> <GridViewColumn Header="성명" Width="150"> <GridViewColumn.CellTemplate> <DataTemplate> <TextBlock Text="{Binding Name}" /> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> </GridView> </Setter.Value> </Setter> <Style.Triggers> <DataTrigger Binding="{Binding IsLoading}" Value="True"> <Setter Property="ListView.Cursor" Value="Wait" /> <Setter Property="ListView.Background" Value="LightGray" /> </DataTrigger> </Style.Triggers> </Style> </Window.Resources> <Grid Margin="10"> <Grid.RowDefinitions> <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" /> <RowDefinition Height="*" /> </Grid.RowDefinitions> <GroupBox Header="항목 공급자" Grid.Row="0"> <StackPanel Orientation="Horizontal" Margin="0 10 0 0"> <TextBlock VerticalAlignment="Center" Margin="10 0 0 0" TextAlignment="Right" Text="항목 수 : " /> <TextBox Name="itemCountTextBox" VerticalAlignment="Center" Width="70" Height="25" HorizontalContentAlignment="Right" VerticalContentAlignment="Center" Text="1000000" /> <TextBlock VerticalAlignment="Center" Margin="10 0 0 0" TextAlignment="Right" Text="조회 시간 (밀리초) : " /> <TextBox Name="fetchDelayTextBox" VerticalAlignment="Center" Width="50" Height="25" HorizontalContentAlignment="Right" VerticalContentAlignment="Center" Text="1000" /> </StackPanel> </GroupBox> <GroupBox Header="컬렉션" Grid.Row="1" Margin="0 10 0 0"> <StackPanel Margin="10 10 0 0"> <StackPanel Orientation="Horizontal"> <TextBlock Text="타입 :" VerticalAlignment="Center" TextAlignment="Right" /> <RadioButton Name="normalRadioButton" VerticalAlignment="Center" Margin="10 0 0 0" GroupName="rbGroup" Content="List<T>" /> <RadioButton Name="virtualizingRadioButton" VerticalAlignment="Center" Margin="10 0 0 0" GroupName="rbGroup" Content="VirtualizingList<T>" /> <RadioButton Name="asyncRadioButton" VerticalAlignment="Center" Margin="10 0 0 0" GroupName="rbGroup" IsChecked="True" Content="AsyncVirtualizingList<T>" /> </StackPanel> <StackPanel Margin="0 10 0 0" Orientation="Horizontal"> <TextBlock VerticalAlignment="Center" TextAlignment="Right" Text="페이지 크기 : " /> <TextBox Name="pageSizeTextBox" VerticalAlignment="Center" Width="40" Height="25" HorizontalContentAlignment="Right" VerticalContentAlignment="Center" Text="100" /> <TextBlock VerticalAlignment="Center" Margin="10 0 0 0" TextAlignment="Right" Text="페이지 타임아웃 (초) : " /> <TextBox Name="pageTimeoutTextBox" VerticalAlignment="Center" Width="30" Height="25" HorizontalContentAlignment="Right" VerticalContentAlignment="Center" Text="30" /> </StackPanel> </StackPanel> </GroupBox> <StackPanel Grid.Row="2" Margin="0 10 0 0" Orientation="Horizontal"> <TextBlock Margin="10 0 0 0" VerticalAlignment="Center" Text="메모리 사용량 :" /> <TextBlock Name="memoryUsageTextBox" VerticalAlignment="Center" Margin="10 0 0 0" MinWidth="40" /> <Button VerticalAlignment="Center" Margin="10 0 0 0" Width="100" Height="30" Content="갱신" Click="refreshButton_Click" /> <Rectangle Name="rectangle" VerticalAlignment="Center" Margin="10 0 0 0" Width="20" Height="20" Fill="Blue"> <Rectangle.RenderTransform> <RotateTransform CenterX="10" CenterY="10" Angle="0" /> </Rectangle.RenderTransform> <Rectangle.Triggers> <EventTrigger RoutedEvent="Rectangle.Loaded"> <BeginStoryboard> <Storyboard> <DoubleAnimation Storyboard.TargetName="rectangle" Storyboard.TargetProperty="(TextBlock.RenderTransform).(RotateTransform.Angle)" From="0" To="360" Duration="0:0:5" RepeatBehavior="Forever" /> </Storyboard> </BeginStoryboard> </EventTrigger> </Rectangle.Triggers> </Rectangle> <TextBlock Margin="10 0 0 0" VerticalAlignment="Center" FontStyle="Italic" FontSize="12" Text="애니메이션 일시 중지는 UI 스레드가 중단되었음을 나타냅니다." /> </StackPanel> <ListView Grid.Row="3" Style="{DynamicResource ListViewStyleKey}" Margin="0 10 0 0" /> </Grid> </Window> |
▶ MainWindow.xaml.cs
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using System; using System.Collections.Generic; using System.Windows; using System.Windows.Threading; namespace TestProject { /// <summary> /// 메인 윈도우 /// </summary> public partial class MainWindow : Window { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindow() /// <summary> /// 생성자 /// </summary> public MainWindow() { InitializeComponent(); DispatcherTimer timer = new DispatcherTimer(); timer.Interval = new TimeSpan(0, 0, 1); timer.Tick += timer_Tick; timer.Start(); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 타이머 틱 처리하기 - timer_Tick(sender, e) /// <summary> /// 타이머 틱 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void timer_Tick(object sender, EventArgs e) { this.memoryUsageTextBox.Text = string.Format("{0:0.00} MB", GC.GetTotalMemory(true) / 1024.0 / 1024.0); } #endregion #region 갱신 버튼 클릭시 처리하기 - refreshButton_Click(sender, e) /// <summary> /// 갱신 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void refreshButton_Click(object sender, RoutedEventArgs e) { int itemCount = int.Parse(this.itemCountTextBox.Text ); int fetchDelay = int.Parse(this.fetchDelayTextBox.Text); CustomerProvider customerProvider = new CustomerProvider(itemCount, fetchDelay); int pageSize = int.Parse(this.pageSizeTextBox.Text ); int pageTimeout = int.Parse(this.pageTimeoutTextBox.Text); if(this.normalRadioButton.IsChecked.Value) { DataContext = new List<Customer>(customerProvider.FetchRange(0, customerProvider.FetchCount())); } else if(this.virtualizingRadioButton.IsChecked.Value) { DataContext = new VirtualizingCollection<Customer>(customerProvider, pageSize); } else if(this.asyncRadioButton.IsChecked.Value) { DataContext = new AsyncVirtualizingCollection<Customer>(customerProvider, pageSize, pageTimeout * 1000); } } #endregion } } |
※ .NET 버전 3.5에서만 작동함에 주의한다.
