Silverlight动态获取GridView的 列模板DataTemplate内控件解决方案

Silverlight动态获取GridView的 列模板DataTemplate内控件
  一个GridView的GridViewColumn定制多层表头HeaderCellStyle，并定制对应的模板DataTemplate，
  提供当前GridView对象，
  1，获取模板列DataTemplate里面的控件（条件：并不知道控件的名称）
  2，获取多层表头HeaderCellStyle的层次和每层的控件（这个貌似无法实现）
  请大家提供实现思路

多行表头样式---

<Style x:Key="AuditResultHeaderStyle" TargetType="dataprimitives:GridViewHeaderCell" >

                <Setter Property="Template">

                    <Setter.Value>

                        <ControlTemplate>

                            <Grid x:Name="Root">

                                <Grid.RowDefinitions>

                                    <RowDefinition Height="Auto" />

                                    <RowDefinition Height="1" />

                                    <RowDefinition Height="Auto" />

                                </Grid.RowDefinitions>

                                <Grid.ColumnDefinitions>

                                    <ColumnDefinition Width="90" />

                                    <ColumnDefinition Width="1" />

                                    <ColumnDefinition Width="90" />

                                    <ColumnDefinition Width="1" />

                                    <ColumnDefinition Width="90" />

                                    <ColumnDefinition Width="1" />