我一直致力于建立一个树视图一段时间了，现在我似乎不能得到它的输出正确.它是建立树视图如下：
1.糖果

• M&M巧克力豆

1.蔬菜

• 菠菜

1.水果

• 苹果

虽然这是正确的，但每个列表中的项目比一个更多。我错过了什么或做错了什么，它只显示每个列表的第一个项目。我现在对XML了解很多，但我不喜欢这个特定的XML是如何编写的，我觉得这是错误的，但我不是在一个地方，能够编辑它。是否有可能得到整个列表显示w/o更改的xml？如果是这样，如何？

The code is:
<TreeView x:Name="treeView" Grid.Row="1" ItemsSource="{Binding Source={StaticResource xmlFile}
,XPath=//@Name}">
    <TreeView.ItemTemplate>
          <DataTemplate>
               <TreeViewItem Header="{Binding XPath=.}">
                     <StackPanel>
                        <TextBlock Text="{Binding XPath=..//@Foodname}"/> 
                     </StackPanel>
               </TreeViewItem>
          </DataTemplate>
    </TreeView.ItemTemplate>
</TreeView>



The XML for that is:
<Foods>
    <UnhealthyFoods Name ="Candy"/>
        <Food Foodname = "M&M's" />
        </Food>
        <Food Foodname = "Skittles" />
        </Food>
        <Food Foodname = "Starburst" />
        </Food>
    </UnhealthyFoods>
    <HealthyFoods>
        <FoodGroup1 Name ="Vegetables"/>
        <Food Foodname = "Spinach" />
            </Food>
            <Food Foodname = "Brocolli" />
            </Food>
            <Food Foodname = "Greens" />
            </Food>
    </FoodGroup1>
    </HealthyFoods>
    <HealthyFoods>
        <FoodGroup2 Name ="Fruits"/>
        <Food Foodname = "Apples" />
            </Food>
            <Food Foodname = "Pears" />
            </Food>
            <Food Foodname = "Cherries" />
            </Food>
    </FoodGroup2>
    </HealthyFoods>
</Foods>