应用Items属性

使用Items属性
随 WPF 附带的每个 ItemsControl 具有一个对应的类，该类代表 ItemsControl 中的一个项。下表列出了随 WPF 附带的 ItemsControl 对象及其相应的项容器。

ItemsControl  项容器

ComboBox   ComboBoxItem

ContextMenu  MenuItem

ListBox   ListBoxItem

ListView  ListViewItem

Menu    MenuItem

StatusBar  StatusBarItem

TabControl  TabItem

TreeView  TreeViewItem

<Window x:Class="WpfApplication1.使用Items属性"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="使用Items属性" Height="300" Width="300">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="82*" />
            <RowDefinition Height="96*" />
            <RowDefinition Height="84*" />
        </Grid.RowDefinitions>

        <!--方法一-->
        <ListBox Grid.Row="0">
            <ListBox.Items>
                <ListBoxItem>
                    Item A  
                </ListBoxItem>
                <ListBoxItem>
                    <TextBlock Text="Item B" /> 
                </ListBoxItem>
            </ListBox.Items>
        </ListBox>
       
        <!--方法二，省略ListBox.Items-->
        <ListBox Grid.Row="1">
            <ListBoxItem>
                Item A
            </ListBoxItem>
            <ListBoxItem>
                <TextBlock Text="Item B" /> 
            </ListBoxItem>
        </ListBox>
       
        <!--方法三，省略ListBoxItem-->
        <ListBox Grid.Row="2">
            <ListBox.Items>
                Item A 
                <TextBlock Text="Item B" />
            </ListBox.Items>
        </ListBox>
    </Grid>
</Window>

四、HeaderedItemsControl模型
HeaderedItemsControl 从 ItemsControl 类继承。HeaderedItemsControl 定义 Header 属性，该属性遵从相同的规则，因为 HeaderedContentControl. WPF 的 Header 属性附带三个从 HeaderedItemsControl 继承的控件：MenuItem、ToolBar、TreeViewItem

HeaderedItemsControl模型可以理解为如下结构：一个HeaderedItemsControl包含一个Items集合，每一个Item包含一个Header属性，一个子Items集合，以TreeView和TreeViewItem为例：
<Window x:Class="WpfApplication1.HeaderedItemsControl模型"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="HeaderedItemsControl模型" Height="300" Width="300">
    <Canvas>
        <TreeView>
            <TreeView.Items>
                <TreeViewItem>
                    <TreeViewItem.Header>
                        <TextBlock Text="Root Node A" />
                        </TreeViewItem.Header>
                    <TreeViewItem.Items>
                        <TextBlock Text="A - 1" />      
                            <TreeViewItem> 
                                <TreeViewItem.Header> 
                                    <TextBlock Text="A - 2" />
                                </TreeViewItem.Header> 
                                <TreeViewItem.Items>
                                    <TextBlock Text="A - 2 - 1" /> 
                                    <TextBlock Text="A - 2 - 2" /> 
                                    <TextBlock Text="A - 2 - 3" />
                                </TreeViewItem.Items> 
                            </TreeViewItem> 
                        </TreeViewItem.Items>
                </TreeViewItem>
                <TreeViewItem>
                    <TreeViewItem.Header>Tree Node B</TreeViewItem.Header>
                    <TreeViewItem.Items>
                        <TextBlock>B-1</TextBlock>
                        <TreeViewItem>
                            <TreeViewItem.Header>
                                B_B_1
                            </TreeViewItem.Header>
                            <TextBlock>B-B_1</TextBlock>
                            <TextBlock>B-B_2</TextBlock>
                        </TreeViewItem>
                    </TreeViewItem.Items>
                   
                </TreeViewItem>
            </TreeView.Items>
        </TreeView>
    </Canvas>
</Window>