針對具有分層數據結構的控件設計的，比如說TreeView，相當于可以每一個層級上做DataTemplate

XmlDataProvider：數據源，寫在Resources下

<XmlDataProvider x:Key="Info" XPath="Nations"> <x:XData> <Nations xmlns=""> <Nation Name="中國"> <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表示定義的目標是Nation
ItemsSource表示下一級是Provinces/Province （總標簽/單個標簽名）
StackPanel 定義Nation的外觀
XPath=@Name表示綁定為Name屬性

比如：

<Nation Name="中國" 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>

像引用靜態資源一樣使用
XPath決定顯示的根節點

如果想從第二/三級開始顯示，而不是根節點
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>

轉載于:https://www.cnblogs.com/Lulus/p/8157718.html

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