WPF Treeview bind dictionary set

 1   <TreeView Name="Tree" HorizontalAlignment="Left"  Height="269"  Width="292" > 2             3             <TreeView.ItemTemplate> 4                 <HierarchicalDataTemplate ItemsSource="{Binding Value}"> 5                     <StackPanel> 6                         <TextBlock  Text="{Binding Key.DepartmentName}" Background="Red" /> 7                     </StackPanel> 8                      9                     <HierarchicalDataTemplate.ItemTemplate>10                         <HierarchicalDataTemplate>11                             <TextBlock Text="{Binding Path=ParsonName}"/>12                         </HierarchicalDataTemplate>13                     </HierarchicalDataTemplate.ItemTemplate>14                 </HierarchicalDataTemplate>15             </TreeView.ItemTemplate>

The key is the object class, the valuey is also the object class, And the parsonname is the object class field of the value set.