silverlight 虚拟化 treeview解决办法

silverlight 虚拟化 treeview
本帖最后由 Sandy945 于 2011-12-04 13:31:18 编辑 要做一颗树，已经是点击加载节点了 ，但是节点太多了  3w左右，需要接住虚拟化实现 
下面是我虚拟化的东西   也实现了  但是
在点击节点的时候 ，treeview的滚动条自己滚动了 

 <sdk:TreeView   x:Name="virtualTree" Margin="0,0,0,13">
                <sdk:TreeView.ItemsPanel>
                    <ItemsPanelTemplate>
                        <!--<local:VirtrulaTreeNodesTest></local:VirtrulaTreeNodesTest>-->
                    <VirtualizingStackPanel>
                        
                    </VirtualizingStackPanel>
                </ItemsPanelTemplate>
                </sdk:TreeView.ItemsPanel>
            </sdk:TreeView>

换一种实现方式  代码如下 ，点击节点的时候 滚动条自己不会滚动，但是虚拟化没有了

<ScrollViewer Grid.Row="0" Background="Red" VirtualizingStackPanel.VirtualizationMode="Recycling"
                      VerticalScrollBarVisibility="Auto">
 <sdk:TreeView   x:Name="virtualTree" Margin="0,0,0,13">
                <sdk:TreeView.ItemsPanel>
                    <ItemsPanelTemplate>
                     
                    <VirtualizingStackPanel>
                        
                    </VirtualizingStackPanel>
                </ItemsPanelTemplate>
                </sdk:TreeView.ItemsPanel>
            </sdk:TreeView>
</ScrollViewer>

查看了msdn 有VirtualizingStackPanel
我没看出来 我哪里写错了 ，还希望大家帮忙看下 。
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试试 

VirtualizingStackPanel.IsVirtualizing="True"
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sl版链接
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http://technet.microsoft.com/zh-cn/library/cc716882(VS.90).aspx
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