ItemsControl布局控件怎么用

這篇文章主要介紹了ItemsControl布局控件怎么用,具有一定借鑒價值,感興趣的朋友可以參考下,希望大家閱讀完這篇文章之后大有收獲,下面讓小編帶著大家一起了解一下。

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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 - 虛擬化布局控件,ListView 的默認布局控件
                        Orientation - 子元素的排列方向
                            Vertical - 垂直排列,默認值
                            Horizontal - 水平排列
                        CacheLength - 可見區(qū)外的需要緩存的數(shù)據(jù)的大?。ㄒ钥梢妳^(qū)條數(shù)大小的倍數(shù)為單位),默認值為 4.0
                            比如當可見區(qū)可以顯示 10 條數(shù)據(jù),CacheLength 為 4 時,可見區(qū)外的需要緩存的數(shù)據(jù)的大小則為 4 * 10 = 40,也就是說整個緩存數(shù)據(jù)的大小為 10 + 4 * 10 = 50
                            實際測試發(fā)現(xiàn),可能會有一定的偏差,但是大體是準確的--><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 - 虛擬化布局控件,ListView 的默認布局控件
                        GroupPadding - 每一個數(shù)據(jù)組的 padding
                        GroupHeaderPlacement - 每一個數(shù)據(jù)組的 header 的顯示位置
                            Top - 頂部。默認值
                            Left - 左側(cè)
                        AreStickyGroupHeadersEnabled - 組 header 是否是固定的,即不隨組數(shù)據(jù)的滾動而滾動。默認值為 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 - 虛擬化布局控件,ListView 的默認布局控件(繼承自 Panel, 請參見 /Controls/LayoutControl/PanelDemo.xaml)
 *     FirstCacheIndex - 緩存中的第一項在全部數(shù)據(jù)中的索引位置
 *     FirstVisibleIndex - 屏幕上顯示的第一項在全部數(shù)據(jù)中的索引位置
 *     LastCacheIndex - 緩存中的最后一項在全部數(shù)據(jù)中的索引位置
 *     LastVisibleIndex - 屏幕上顯示的最后一項在全部數(shù)據(jù)中的索引位置
 *     CacheLength - 可見區(qū)外的需要緩存的數(shù)據(jù)的大?。ㄒ钥梢妳^(qū)條數(shù)大小的倍數(shù)為單位),默認值為 4.0
 *         比如當可見區(qū)可以顯示 10 條數(shù)據(jù),CacheLength 為 4 時,可見區(qū)外的需要緩存的數(shù)據(jù)的大小則為 4 * 10 = 40,也就是說整個緩存數(shù)據(jù)的大小為 10 + 4 * 10 = 50
 *         實際測試發(fā)現(xiàn),可能會有一定的偏差,但是大體是準確的 */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);// 構(gòu)造數(shù)據(jù)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();// 獲取 ListView 中的 ItemsStackPanel 控件_itemsStackPanel1 = listView1.ItemsPanelRoot as ItemsStackPanel;
            _itemsStackPanel2 = listView2.ItemsPanelRoot as ItemsStackPanel;// 獲取 ListView 中的 ItemsStackPanel 控件// _itemsStackPanel1 = Helper.GetVisualChild<ItemsStackPanel>(listView1);// _itemsStackPanel2 = Helper.GetVisualChild<ItemsStackPanel>(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 數(shù)據(jù)private List<NavigationModel> 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 - 虛擬化布局控件,GridView 的默認布局控件
                        Orientation - 子元素的排列方向
                            Vertical - 垂直排列,默認值
                            Horizontal - 水平排列
                        ItemWidth - 每個 item 的寬
                        ItemHeight - 每個 item 的高
                        MaximumRowsOrColumns - 最大行數(shù)或最大列數(shù)(默認值為 -1)
                        CacheLength - 可見區(qū)外的需要緩存的數(shù)據(jù)的大?。ㄒ钥梢妳^(qū)條數(shù)大小的倍數(shù)為單位),默認值為 4.0
                            比如當可見區(qū)可以顯示 10 條數(shù)據(jù),CacheLength 為 4 時,可見區(qū)外的需要緩存的數(shù)據(jù)的大小則為 4 * 10 = 40,也就是說整個緩存數(shù)據(jù)的大小為 10 + 4 * 10 = 50
                            實際測試發(fā)現(xiàn),可能會有一定的偏差,但是大體是準確的--><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 - 虛擬化布局控件,GridView 的默認布局控件
                        GroupPadding - 每一個數(shù)據(jù)組的 padding
                        GroupHeaderPlacement - 每一個數(shù)據(jù)組的 header 的顯示位置
                            Top - 頂部。默認值
                            Left - 左側(cè)
                        AreStickyGroupHeadersEnabled - 組 header 是否是固定的,即不隨組數(shù)據(jù)的滾動而滾動。默認值為 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 - 虛擬化布局控件,GridView 的默認布局控件(繼承自 Panel, 請參見 /Controls/LayoutControl/PanelDemo.xaml)
 *     FirstCacheIndex - 緩存中的第一項在全部數(shù)據(jù)中的索引位置
 *     FirstVisibleIndex - 屏幕上顯示的第一項在全部數(shù)據(jù)中的索引位置
 *     LastCacheIndex - 緩存中的最后一項在全部數(shù)據(jù)中的索引位置
 *     LastVisibleIndex - 屏幕上顯示的最后一項在全部數(shù)據(jù)中的索引位置
 *     CacheLength - 可見區(qū)外的需要緩存的數(shù)據(jù)的大?。ㄒ钥梢妳^(qū)條數(shù)大小的倍數(shù)為單位),默認值為 4.0
 *         比如當可見區(qū)可以顯示 10 條數(shù)據(jù),CacheLength 為 4 時,可見區(qū)外的需要緩存的數(shù)據(jù)的大小則為 4 * 10 = 40,也就是說整個緩存數(shù)據(jù)的大小為 10 + 4 * 10 = 50
 *         實際測試發(fā)現(xiàn),可能會有一定的偏差,但是大體是準確的 */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);// 構(gòu)造數(shù)據(jù)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();// 獲取 GridView 中的 ItemsWrapGrid 控件_itemsWrapGrid1 = gridView1.ItemsPanelRoot as ItemsWrapGrid;
            _itemsWrapGrid2 = gridView2.ItemsPanelRoot as ItemsWrapGrid;// 獲取 GridView 中的 ItemsWrapGrid 控件// _itemsWrapGrid1 = Helper.GetVisualChild<ItemsWrapGrid>(gridView1);// _itemsWrapGrid2 = Helper.GetVisualChild<ItemsWrapGrid>(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 數(shù)據(jù)private List<NavigationModel> 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();
        }
    }
}

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