how to access all stack panel in DataGridTemplateColumn

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C#

WPF

C#4.0

how to access all stack panel in DataGridTemplateColumn?

I'm using this code :

    <DataGrid HeadersVisibility="None"  Name="dgUser" Grid.Row="0" Grid.Column="0" AutoGenerateColumns="False" ItemsSource="{Binding}"
CanUserAddRows="False" CanUserDeleteRows="False" CanUserSortColumns="False">
                               <DataGrid.Columns>
                                   <DataGridTemplateColumn Width="*" Header="" IsReadOnly="True">
                                       <DataGridTemplateColumn.CellTemplate>
                                           <DataTemplate>
                                               <StackPanel Orientation="Horizontal"  Margin="10,0,0,0" Grid.Column="0"  Name="spGuns">
                                                   <TextBlock Margin="0,0,5,0" Text="Count"/>
                                                   <TextBox Margin="0,0,5,0" MinWidth="50" Width="Auto" Name="txtCount" Text="{Binding Count}"/>
                                                   <TextBlock Margin="0,0,5,0" Text="NameEn"/>
                                                   <TextBox Margin="0,0,5,0" MinWidth="50" Width="Auto" Name="txtGunNameEn" Text="{Binding NameEn}"/>
                                               </StackPanel>
                                           </DataTemplate>
                                       </DataGridTemplateColumn.CellTemplate>
                                   </DataGridTemplateColumn>
                               </DataGrid.Columns>
                           </DataGrid>

data in datagrid :

http://www.imagetoo.com/?v=untitlfif.png

how to access all stack panel in DataGridTemplateColumn?