針對(duì)具有分層數(shù)據(jù)結(jié)構(gòu)的控件設(shè)計(jì)的，比如說(shuō)TreeView，相當(dāng)于可以每一個(gè)層級(jí)上做DataTemplate

XmlDataProvider：數(shù)據(jù)源，寫在Resources下

<XmlDataProvider x:Key="Info" XPath="Nations"> <x:XData> <Nations xmlns=""> <Nation Name="中國(guó)"> <Provinces> <Province Name="安徽"> <Citys> <City Name="安慶"> <Countrys> <Country Name="潛山"/> <Country Name="桐城"/> </Countrys> </City> <City Name="合肥"> <Countrys> <Country Name="長(zhǎng)豐"/> <Country Name="肥東"/> </Countrys> </City> </Citys> </Province> <Province Name="江蘇"> <Citys> <City Name="南京"> <Countys> <Country Name="溧水"/> <Country Name="高淳"/> </Countys> </City> <City Name="蘇州"> <Countys> <Country Name="常熟"/> </Countys> </City> </Citys> </Province> </Provinces> </Nation> </Nations> </x:XData> </XmlDataProvider>

HierarchicalDataTemplate：層級(jí)模板，寫在Resources下

<HierarchicalDataTemplate DataType="Nation" ItemsSource="{Binding XPath=Provinces/Province}"><StackPanel Background="AliceBlue"> <TextBlock FontSize="20" Text="{Binding XPath=@Name}"/> </StackPanel> </HierarchicalDataTemplate> <HierarchicalDataTemplate DataType="Province" ItemsSource="{Binding XPath=Citys/City}"> <StackPanel Background="LightBlue"> <TextBlock FontSize="18" Text="{Binding XPath=@Name}"/> </StackPanel> </HierarchicalDataTemplate> <HierarchicalDataTemplate DataType="City" ItemsSource="{Binding XPath=Countrys/Country}"> <StackPanel Background="LightBlue"> <TextBlock FontSize="18" Text="{Binding XPath=@Name}"/> </StackPanel> </HierarchicalDataTemplate> <HierarchicalDataTemplate DataType="Country"> <StackPanel Background="LightSalmon"> <TextBlock FontSize="18" Text="{Binding XPath=@Name}"/> </StackPanel> </HierarchicalDataTemplate>

解釋

<HierarchicalDataTemplate DataType="Nation" ItemsSource="{Binding XPath=Provinces/Province}"><StackPanel Background="AliceBlue"> <TextBlock FontSize="20" Text="{Binding XPath=@Name}"/> </StackPanel> </HierarchicalDataTemplate>

DataType表示定義的目標(biāo)是Nation
ItemsSource表示下一級(jí)是Provinces/Province （總標(biāo)簽/單個(gè)標(biāo)簽名）
StackPanel 定義Nation的外觀
XPath=@Name表示綁定為Name屬性

比如：

<Nation Name="中國(guó)" Age="15"><HierarchicalDataTemplate DataType="Nation" ItemsSource="{Binding XPath=Provinces/Province}"> <StackPanel Background="AliceBlue"> <TextBlock FontSize="20" Text="{Binding XPath=@Name}"/> <Label FontSize="15" Content="{Binding XPath=@Age}"></Label> </StackPanel> </HierarchicalDataTemplate> </Nation>

TreeView

<TreeView ItemsSource="{Binding Source={StaticResource ResourceKey=Info},XPath=Nation}"></TreeView>

像引用靜態(tài)資源一樣使用
XPath決定顯示的根節(jié)點(diǎn)

如果想從第二/三級(jí)開始顯示，而不是根節(jié)點(diǎn)
修改XPath（寫路徑，否則找不到）

<TreeView ItemsSource="{Binding Source={StaticResource ResourceKey=Info},XPath=Nation/Provinces/Province}"></TreeView> <TreeView ItemsSource="{Binding Source={StaticResource ResourceKey=Info},XPath=Nation/Provinces/Province/Citys/City}"></TreeView>

轉(zhuǎn)載于:https://www.cnblogs.com/Lulus/p/8157718.html

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