wpf的TreeView怎么找到里面的checkbox？

[qzp000000]

   <TreeView Name="treeViewFun" Margin="58,37,240,59" >
            <TreeView.ItemTemplate x:Name="cmbTemplate">
               
                <HierarchicalDataTemplate  DataType="{x:Type Local:School_node}" ItemsSource="{Binding Path=ListSchoolName}">
                    
                    <StackPanel FlowDirection="LeftToRight" Orientation="Horizontal" >
                        <CheckBox  Content="{Binding Path=Name}"  Click="ffff"></CheckBox>
                    </StackPanel>
                </HierarchicalDataTemplate>
         
            </TreeView.ItemTemplate>

            <TreeView.ItemContainerStyle>
                <Style TargetType="{x:Type TreeViewItem}">
                    <Setter Property="IsExpanded" Value="True"/>
                </Style>
            </TreeView.ItemContainerStyle>
        </TreeView>

这是一个wpfTreeView，里面有个HierarchicalDataTemplate，再里面有checkbox，想要遍历checkbox的值，谢谢大家？