如何判断treeview的叶子节点(当使用HierarchicalDataTemplate)
<HierarchicalDataTemplate DataType="{x:Type model:DirectoryTree}" ItemsSource="{Binding Path=ChildNodes}">
<StackPanel Orientation="Horizontal" Margin="0,2,0,2">
<Label local:AttachedPropertyHelper.MouseDoubleClick="{Binding Path=MouseDoubleClickCommand}" Content="{Binding Name}">
</Label>
</StackPanel>
</HierarchicalDataTemplate>
想问下大家,我Label里有个附加双击属性,但我只需要它为叶子节点时,事件才被触发,要怎样判断?