WPF TreeView绑定字典集合

   <TreeView Name="Tree" HorizontalAlignment="Left"  Height="269"  Width="292" >

             <TreeView.ItemTemplate>
                 <HierarchicalDataTemplate ItemsSource="{Binding Value}">
                     <StackPanel>
                         <TextBlock  Text="{Binding Key.DepartmentName}" Background="Red" />
                     </StackPanel>

                     <HierarchicalDataTemplate.ItemTemplate>
                         <HierarchicalDataTemplate>
                             <TextBlock Text="{Binding Path=ParsonName}"/>
                         </HierarchicalDataTemplate>
                     </HierarchicalDataTemplate.ItemTemplate>
                 </HierarchicalDataTemplate>
             </TreeView.ItemTemplate>

Key为实体类，Valuey也是实体类,ParsonName是Value集合的实体类字段