类型如下：
class Category
{
public string Name;
public string Message;
public ObservableCollection<Category> SubCategories;
}
它会说5个类别,其中每个类别包含0(无)到3之间的子类别.
我知道如何将非分层数据绑定到WPF TreeView,但无法弄清楚分层数据值.
解决方法
这是一个例子……
<!-- Create a TreeView,and have it source data from
the AnimalCategories collection -->
<TreeView ItemsSource="{x:Static local:Window1.AnimalCategories}">
<!-- Specify the template that will display a node
from AnimalCategories. I.e.,one each for “Amphibians”
and “Spiders” in this sample. It will get its nested
items from the "Animals" property of each item -->
<TreeView.ItemTemplate>
<HierarchicalDataTemplate ItemsSource="{Binding Path=Animals}">
<!-- Display the AnimalCategory by showing it's Category string -->
<TextBlock FontWeight="Bold" Text="{Binding Path=Category}" />
<!-- Specify the nested template for the individual Animal items
that are within the AnimalCategories. E.g. “California Newt”,etc. -->
<HierarchicalDataTemplate.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Path=Name}"/>
</DataTemplate>
</HierarchicalDataTemplate.ItemTemplate>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
</TreeView>
