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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