ItemsControl 的布局控件实例
导读:收集整理的这篇文章主要介绍了ItemsControl 的布局控件实例,觉得挺不错的,现在分享给大家,也给大家做个参考。示例1、ITemsStackPanel 的示例Controls/CollectionControl/ItemsContro...
收集整理的这篇文章主要介绍了ItemsControl 的布局控件实例,觉得挺不错的,现在分享给大家,也给大家做个参考。示例1、ITemsStackPanel 的示例
Controls/CollectionControl/ItemsControlDemo/LayoutControl/ItemsStackPanelDemo.xaml
Pagex:Class="Windows10.Controls.CollectionControl.ItemsControlDemo.LayoutControl.ItemsStackPanelDemo"XMlns="http://schemas.microsoft.COM/winfx/2006/xaML/PResentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:local="using:Windows10.Controls.CollectionControl.ItemsControlDemo.LayoutControl"xmlns:d="http://schemas.microsoft.com/exPression/blend/2008"xmlns:mc="http://schemas.oPEnxmlformats.org/markup-compatibility/2006"mc:Ignorable="d" xmlns:common="using:Windows10.Common"> Grid Background="Transparent"> StackPanel Margin="10 0 10 10" orientation="Horizontal"> StackPanel Margin="5"> !--itemsStackPanel - 虚拟化布局控件,ListView 的默认布局控件 Orientation - 子元素的排列方向 Vertical - 垂直排列,默认值 Horizontal - 水平排列 CacheLength - 可见区外的需要缓存的数据的大小(以可见区条数大小的倍数为单位),默认值为 4.0 比如当可见区可以显示 10 条数据,CacheLength 为 4 时,可见区外的需要缓存的数据的大小则为 4 * 10 = 40,也就是说整个缓存数据的大小为 10 + 4 * 10 = 50 实际测试发现,可能会有一定的偏差,但是大体是准确的--> ListView Name="listView1" Margin="5" Width="400" Height="400" HorizontalAlignment="Left" ItemsSource="{ x:Bind MyData.View} "> ListView.ItemTemplate> DataTemplate x:DataType="common:NavigationModel"> Grid Background="Blue"> TextBlock Text="{ x:Bind Title} " /> /Grid> /DataTemplate> /ListView.ItemTemplate> ListView.ItemsPanel> ItemsPanelTemplate> ItemsStackPanel Orientation="Vertical" CacheLength="4" /> /ItemsPanelTemplate> /ListView.ItemsPanel> /ListView> TextBlock Name="lblMsg1" Margin="5" /> /StackPanel> StackPanel Margin="5"> !--ItemsStackPanel - 虚拟化布局控件,ListView 的默认布局控件 GroupPadding - 每一个数据组的 padding GroupHeaderPlacement - 每一个数据组的 header 的显示位置 Top - 顶部。默认值 Left - 左侧 AreStickyGroupHeadersEnabled - 组 header 是否是固定的,即不随组数据的滚动而滚动。默认值为 true--> ListView Name="listView2" Margin="5" Width="400" Height="400" HorizontalAlignment="Left" ItemsSource="{ x:Bind MyData.View} "> ListView.GroupStyle> GroupStyle> GroupStyle.HeaderTemplate> DataTemplate> TextBlock Text="{ Binding Title} " /> /DataTemplate> /GroupStyle.HeaderTemplate> /GroupStyle> /ListView.GroupStyle> ListView.ItemTemplate> DataTemplate> TextBlock Text="{ Binding Title} " /> /DataTemplate> /ListView.ItemTemplate> ListView.ItemsPanel> ItemsPanelTemplate> ItemsStackPanel GroupPadding="4" GroupHeaderPlacement="Top" AreStickyGroupHeadersEnabled="{ Binding IsChecked, ElementName=chkAreStickyGroupHeadersEnabled} " /> /ItemsPanelTemplate> /ListView.ItemsPanel> /ListView> ComboBox x:Name="cmbGroupHeaderPlacement" Margin="5" PlaceholderText="GroupHeaderPlacement" SelectionChanged="cmbGroupHeaderPlacement_SelectionChanged"> ComboBoxItem> Top/ComboBoxItem> ComboBoxItem> Left/ComboBoxItem> /ComboBox> CheckBox Name="chkAreStickyGroupHeadersEnabled" Content="AreStickyGroupHeadersEnabled" IsChecked="True" Margin="5" /> /StackPanel> /StackPanel> /Grid> /Page>
Controls/CollectionControl/ItemsControlDemo/LayoutControl/ItemsStackPanelDemo.xaml.cs
/* * ItemsStackPanel - 虚拟化布局控件,ListView 的默认布局控件(继承自 Panel, 请参见 /Controls/LayoutControl/PanelDemo.xaml) * FirstCacheIndex - 缓存中的第一项在全部数据中的索引位置 * FirstVisibleIndex - 屏幕上显示的第一项在全部数据中的索引位置 * LastCacheIndex - 缓存中的最后一项在全部数据中的索引位置 * LastVisibleIndex - 屏幕上显示的最后一项在全部数据中的索引位置 * CacheLength - 可见区外的需要缓存的数据的大小(以可见区条数大小的倍数为单位),默认值为 4.0 * 比如当可见区可以显示 10 条数据,CacheLength 为 4 时,可见区外的需要缓存的数据的大小则为 4 * 10 = 40,也就是说整个缓存数据的大小为 10 + 4 * 10 = 50 * 实际测试发现,可能会有一定的偏差,但是大体是准确的 */using System; using System.Collections.Generic; using System.Linq; using System.Xml.Linq; using Windows.UI.Xaml; using Windows.UI.Xaml.Controls; using Windows.UI.Xaml.Controls.Primitives; using Windows.UI.Xaml.Data; using Windows10.Common; namespace Windows10.Controls.CollectionControl.ItemsControlDemo.LayoutControl{ public sealed partial class ItemsStackPanelDemo : Page { public CollectionViewSource MyData { get{ XElement root = XElement.Load("SiteMap.xml"); VAR items = LoadData(root); // 构造数据源CollectionViewSource source = new CollectionViewSource(); source.IsSourceGrouped = true; source.Source = items; source.ItemsPath = new PropertyPath("Items"); return source; } } private ItemsStackPanel _itemsStackPanel1 = null; private ItemsStackPanel _itemsStackPanel2 = null; public ItemsStackPanelDemo() { this.Initializecomponent(); this.Loaded += ItemsStackPanelDemo_Loaded; } private void ItemsStackPanelDemo_Loaded(object sender, RoutedEventArgs e) { DispatcherTimer dTimer = new DispatcherTimer(); dTimer.Interval = TimeSpan.Zero; dTimer.Tick += DTimer_Tick; dTimer.Start(); // 获取 ListView 中的 ItemsStackPanel 控件_itemsStackPanel1 = listView1.ItemsPanelRoot as ItemsStackPanel; _itemsStackPanel2 = listView2.ItemsPanelRoot as ItemsStackPanel; // 获取 ListView 中的 ItemsStackPanel 控件// _itemsStackPanel1 = Helper.GetVisualChildItemsStackPanel> (listView1); // _itemsStackPanel2 = Helper.GetVisualChildItemsStackPanel> (listView2); } private void DTimer_Tick(object sender, object e) { lblMsg1.Text = "FirstCacheIndex: " + _itemsStackPanel1.FirstCacheIndex.ToString(); lblMsg1.Text += environment.NewLine; lblMsg1.Text += "FirstVisibleIndex: " + _itemsStackPanel1.FirstVisibleIndex.ToString(); lblMsg1.Text += Environment.NewLine; lblMsg1.Text += "LastCacheIndex: " + _itemsStackPanel1.LastCacheIndex.ToString(); lblMsg1.Text += Environment.NewLine; lblMsg1.Text += "LastVisibleIndex: " + _itemsStackPanel1.LastVisibleIndex.ToString(); lblMsg1.Text += Environment.NewLine; lblMsg1.Text += "CacheLength: " + _itemsStackPanel1.CacheLength.ToString(); } private void cmbGroupHeaderPlacement_SelectionChanged(object sender, SelectionChangedEventArgs e) { _itemsStackPanel2.GroupHeaderPlacement = (GroupHeaderPlacement)Enum.Parse(typeof(GroupHeaderPlacement), (e.AddedItems[0] as ComboBoxItem).Content.ToString()); } // 解析 xml 数据private ListNavigationModel> LoadData(XElement root) { if (root == null)return null; var items = From n in root.Elements("node")select new NavigationModel { Title = (string)n.Attribute("title"), Url = (string)n.Attribute("url"), Items = LoadData(n) } ; return items.ToList(); } } }
2、ItemsWrapGrid 的示例
Controls/CollectionControl/ItemsControlDemo/LayoutControl/ItemsWrapGridDemo.xaml
Pagex:Class="Windows10.Controls.CollectionControl.ItemsControlDemo.LayoutControl.ItemsWrapGridDemo"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:local="using:Windows10.Controls.CollectionControl.ItemsControlDemo.LayoutControl"xmlns:d="http://schemas.microsoft.com/expression/blend/2008"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"mc:Ignorable="d" xmlns:common="using:Windows10.Common"> Grid Background="Transparent"> StackPanel Margin="10 0 10 10" Orientation="Horizontal"> StackPanel Margin="5"> !--ItemsWrapGrid - 虚拟化布局控件,GridView 的默认布局控件 Orientation - 子元素的排列方向 Vertical - 垂直排列,默认值 Horizontal - 水平排列 ItemWidth - 每个 item 的宽 ItemHeight - 每个 item 的高 MaximumRowsOrColumns - 最大行数或最大列数(默认值为 -1) CacheLength - 可见区外的需要缓存的数据的大小(以可见区条数大小的倍数为单位),默认值为 4.0 比如当可见区可以显示 10 条数据,CacheLength 为 4 时,可见区外的需要缓存的数据的大小则为 4 * 10 = 40,也就是说整个缓存数据的大小为 10 + 4 * 10 = 50 实际测试发现,可能会有一定的偏差,但是大体是准确的--> GridView Name="gridView1" Margin="5" Width="400" Height="400" HorizontalAlignment="Left" ItemsSource="{ x:Bind MyData.View} "> GridView.ItemTemplate> DataTemplate x:DataType="common:NavigationModel"> Grid Background="Blue"> TextBlock Text="{ x:Bind Title} " /> /Grid> /DataTemplate> /GridView.ItemTemplate> GridView.ItemsPanel> ItemsPanelTemplate> ItemsWrapGrid Orientation="Horizontal" ItemWidth="120" ItemHeight="50" MaximumRowsOrColumns="3" CacheLength="4" /> /ItemsPanelTemplate> /GridView.ItemsPanel> /GridView> TextBlock Name="lblMsg1" Margin="5" /> /StackPanel> StackPanel Margin="5"> !--ItemsWrapGrid - 虚拟化布局控件,GridView 的默认布局控件 GroupPadding - 每一个数据组的 padding GroupHeaderPlacement - 每一个数据组的 header 的显示位置 Top - 顶部。默认值 Left - 左侧 AreStickyGroupHeadersEnabled - 组 header 是否是固定的,即不随组数据的滚动而滚动。默认值为 true--> ListView Name="gridView2" Margin="5" Width="400" Height="400" HorizontalAlignment="Left" ItemsSource="{ x:Bind MyData.View} "> ListView.GroupStyle> GroupStyle> GroupStyle.HeaderTemplate> DataTemplate> TextBlock Text="{ Binding Title} " /> /DataTemplate> /GroupStyle.HeaderTemplate> /GroupStyle> /ListView.GroupStyle> ListView.ItemTemplate> DataTemplate> TextBlock Text="{ Binding Title} " Width="100" /> /DataTemplate> /ListView.ItemTemplate> ListView.ItemsPanel> ItemsPanelTemplate> ItemsWrapGrid Orientation="Horizontal" MaximumRowsOrColumns="3" GroupPadding="4" GroupHeaderPlacement="Top" AreStickyGroupHeadersEnabled="{ Binding IsChecked, ElementName=chkAreStickyGroupHeadersEnabled} " /> /ItemsPanelTemplate> /ListView.ItemsPanel> /ListView> ComboBox x:Name="cmbGroupHeaderPlacement" Margin="5" PlaceholderText="GroupHeaderPlacement" SelectionChanged="cmbGroupHeaderPlacement_SelectionChanged"> ComboBoxItem> Top/ComboBoxItem> ComboBoxItem> Left/ComboBoxItem> /ComboBox> CheckBox Name="chkAreStickyGroupHeadersEnabled" Content="AreStickyGroupHeadersEnabled" IsChecked="True" Margin="5" /> /StackPanel> /StackPanel> /Grid> /Page>
Controls/CollectionControl/ItemsControlDemo/LayoutControl/ItemsWrapGridDemo.xaml.cs
/* * ItemsWrapGrid - 虚拟化布局控件,GridView 的默认布局控件(继承自 Panel, 请参见 /Controls/LayoutControl/PanelDemo.xaml) * FirstCacheIndex - 缓存中的第一项在全部数据中的索引位置 * FirstVisibleIndex - 屏幕上显示的第一项在全部数据中的索引位置 * LastCacheIndex - 缓存中的最后一项在全部数据中的索引位置 * LastVisibleIndex - 屏幕上显示的最后一项在全部数据中的索引位置 * CacheLength - 可见区外的需要缓存的数据的大小(以可见区条数大小的倍数为单位),默认值为 4.0 * 比如当可见区可以显示 10 条数据,CacheLength 为 4 时,可见区外的需要缓存的数据的大小则为 4 * 10 = 40,也就是说整个缓存数据的大小为 10 + 4 * 10 = 50 * 实际测试发现,可能会有一定的偏差,但是大体是准确的 */using System; using System.Collections.Generic; using System.Linq; using System.Xml.Linq; using Windows.UI.Xaml; using Windows.UI.Xaml.Controls; using Windows.UI.Xaml.Controls.Primitives; using Windows.UI.Xaml.Data; using Windows10.Common; namespace Windows10.Controls.CollectionControl.ItemsControlDemo.LayoutControl{ public sealed partial class ItemsWrapGridDemo : Page { public CollectionViewSource MyData { get{ XElement root = XElement.Load("SiteMap.xml"); var items = LoadData(root); // 构造数据源CollectionViewSource source = new CollectionViewSource(); source.IsSourceGrouped = true; source.Source = items; source.ItemsPath = new PropertyPath("Items"); return source; } } private ItemsWrapGrid _itemsWrapGrid1 = null; private ItemsWrapGrid _itemsWrapGrid2 = null; public ItemsWrapGridDemo() { this.InitializeComponent(); this.Loaded += ItemsWrapGridDemo_Loaded; } private void ItemsWrapGridDemo_Loaded(object sender, RoutedEventArgs e) { DispatcherTimer dTimer = new DispatcherTimer(); dTimer.Interval = TimeSpan.Zero; dTimer.Tick += DTimer_Tick; dTimer.Start(); // 获取 GridView 中的 ItemsWrapGrid 控件_itemsWrapGrid1 = gridView1.ItemsPanelRoot as ItemsWrapGrid; _itemsWrapGrid2 = gridView2.ItemsPanelRoot as ItemsWrapGrid; // 获取 GridView 中的 ItemsWrapGrid 控件// _itemsWrapGrid1 = Helper.GetVisualChildItemsWrapGrid> (gridView1); // _itemsWrapGrid2 = Helper.GetVisualChildItemsWrapGrid> (gridView2); } private void DTimer_Tick(object sender, object e) { lblMsg1.Text = "FirstCacheIndex: " + _itemsWrapGrid1.FirstCacheIndex.ToString(); lblMsg1.Text += Environment.NewLine; lblMsg1.Text += "FirstVisibleIndex: " + _itemsWrapGrid1.FirstVisibleIndex.ToString(); lblMsg1.Text += Environment.NewLine; lblMsg1.Text += "LastCacheIndex: " + _itemsWrapGrid1.LastCacheIndex.ToString(); lblMsg1.Text += Environment.NewLine; lblMsg1.Text += "LastVisibleIndex: " + _itemsWrapGrid1.LastVisibleIndex.ToString(); lblMsg1.Text += Environment.NewLine; lblMsg1.Text += "CacheLength: " + _itemsWrapGrid1.CacheLength.ToString(); } private void cmbGroupHeaderPlacement_SelectionChanged(object sender, SelectionChangedEventArgs e) { _itemsWrapGrid2.GroupHeaderPlacement = (GroupHeaderPlacement)Enum.Parse(typeof(GroupHeaderPlacement), (e.AddedItems[0] as ComboBoxItem).Content.ToString()); } // 解析 xml 数据private ListNavigationModel> LoadData(XElement root) { if (root == null)return null; var items = from n in root.Elements("node")select new NavigationModel { Title = (string)n.Attribute("title"), Url = (string)n.Attribute("url"), Items = LoadData(n) } ; return items.ToList(); } } }
OK
[源码下载]
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