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net4.5使用wd的treeview首次加载后不展开,先下拉再展开后会回到最顶部 #163

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net4.5使用wd的treeview首次加载后不展开,先下拉再展开后会回到最顶部
<TreeView x:Name="tv_items" Grid.Row="1" ItemsSource="{Binding TreeNodes}" VirtualizingPanel.CacheLength="2" VirtualizingPanel.IsVirtualizing="True" VirtualizingPanel.VirtualizationMode="Recycling"> <TreeView.ItemTemplate> <HierarchicalDataTemplate ItemsSource="{Binding Children}"> <StackPanel Orientation="Horizontal"> <CheckBox IsChecked="{Binding IsChecked}" /> <TextBlock Text="{Binding Name}"/> </StackPanel> </HierarchicalDataTemplate> </TreeView.ItemTemplate> </TreeView>

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