如果使用自定义集合，则层次结构数据模板将起作用. 我使我的课程如下:

Hierarchial Data Templates work if you use custom collections.... I made my classes like this :

public class EntityBase :ObservableCollection<object>
{

}

public class Parent : EntityBase
{

}  

public class ChildA : EntityBase // Dont make it a collection if it has noe childern to be displayed so dont inherit for EntityBase
{
   //Child Properties
}


public class ChildB : EntityBase
{
//Child Properties
}  

现在，当您最终将数据绑定到TreeView时，您将把ChildA和ChildB项作为Parent对象的子项，即

Now when you finally bind the data to you TreeView you'll make ChildA and ChildB items as Child items of Parent object i.e

    public ObservableCollection<object> GetData()
    {
         var temp = new ObservableCollection<object>();
         Parent parent = new Parent(); // Root Node
         temp.Add(parent);
         parent.Add(new ChildA()); // ChildA as Child1 of Parent

         parent.Add(new ChildA()); // ChildA as Child2 of Parent

         parent.Add(new ChildB()); // ChildB as Child3 of Parent

         parent.Add(new ChildB()); // ChildB as Child4 of Parent

         return temp;

    }  

最后，层次结构数据模板将看起来像..

Finally The Hierarchial data templates will look like..

<TreeView Name="test" Grid.Row="0" ItemsSource="{Binding Path=TreeData,Source={StaticResource ResourceKey=DataSource}}">
        <TreeView.Resources>
            <HierarchicalDataTemplate DataType="{x:Type EntityLayer:Parent}" ItemsSource="{Binding}">
                <StackPanel>
                    <TextBlock>Parent</TextBlock>
                </StackPanel>
            </HierarchicalDataTemplate>
            <HierarchicalDataTemplate DataType="{x:Type EntityLayer:ChildA}" ItemsSource="{Binding}">
                <StackPanel>
                    <TextBlock Text="{Binding Path = Name}"></TextBlock>
                </StackPanel>
            </HierarchicalDataTemplate>
            <HierarchicalDataTemplate DataType="{x:Type EntityLayer:ChildB}" ItemsSource="{Binding}">
                <StackPanel>
                    <TextBlock Text="{Binding Path = Name}"></TextBlock>
                </StackPanel>
            </HierarchicalDataTemplate>
        </TreeView.Resources>
    </TreeView>