How to access the controls

Question

Hi,
i am having textblock called <TextBlock x:Name="tb_atype" Text="{Binding AType}" Visibility="Collapsed"></TextBlock> now i am binding the data to datagrid from database. in my database i am having values 1 and 2 for above textblock . now my requirement is how to access the value of the textblock and if the value is 1 i have to dispaly stackpanel called "radio" and the value is 2 i have to hide stackpanel radio and have to display the stackpanel called "checkbox". how can i achieve this one . for this in which event i have to writhe the code . can anybody please help me .

Thanks
p.Nagaraju


<sdk:DataGrid x:Name="Qpdatagrid"  AutoGenerateColumns="False"  ItemsSource="{Binding ElementName=dataSource, Path=Data}" LoadingRow="Qpdatagrid_LoadingRow" >
  <sdk:DataGrid.Columns>
  <sdk:DataGridTemplateColumn>
  <sdk:DataGridTemplateColumn.CellTemplate>
 
  <DataTemplate>
  <StackPanel >
  <StackPanel Orientation="Horizontal" x:Name="controls">
  <!--<TextBlock Text="{Binding Path=QID}" />-->
  <!--<TextBlock x:Name="tb_QID" />-->
  <TextBlock x:Name="tb_atype" Text="{Binding AType}" Visibility="Collapsed"></TextBlock>
  <sdk:Label x:Name="lbl_QID" Content="{Binding QID}"  />
 
 
  <TextBlock Text=")"/>
  <TextBlock Text="{Binding Path=Question}" />
  </StackPanel>
  <StackPanel Orientation="Vertical" Height="100" x:Name="radio">
  <!--<RadioButton x:Name="Option1" GroupName="{Binding group1}" IsChecked="{Binding Questionpaper, Mode=TwoWay}" Content="{Binding Option1}" />
  <RadioButton x:Name="Option2" GroupName="{Binding group1}" Content="{Binding Option2}" IsChecked="{Binding Questionpaper, Mode=TwoWay}" />
  <RadioButton x:Name="Option3" GroupName="{Binding group1}" IsChecked="{Binding Questionpaper, Mode=TwoWay}" Content="{Binding Option3}" />
  <RadioButton x:Name="Option4" GroupName="{Binding group1}" IsChecked="{Binding Questionpaper, Mode=TwoWay}" Content="{Binding Option4}"/>-->
  <RadioButton x:Name="rd1" GroupName="{Binding OptionGroup}"  Content="{Binding Option1}" IsChecked="{Binding}"></RadioButton>
  <RadioButton x:Name="rd2" GroupName="{Binding OptionGroup}"  Content="{Binding Option2}" IsChecked="{Binding}"></RadioButton>
  <RadioButton x:Name="rd3" GroupName="{Binding OptionGroup}"  Content="{Binding Option3}" IsChecked="{Binding}"></RadioButton>
  <RadioButton x:Name="rd4" GroupName="{Binding OptionGroup}"  Content="{Binding Option4}" IsChecked="{Binding}"></RadioButton>
  </StackPanel>
  <StackPanel Orientation="Vertical" x:Name="checkbox">
  <CheckBox x:Name="chk1" Content="{Binding Option1}" IsChecked="{Binding Option1}" ></CheckBox>
  <CheckBox x:Name="chk2" Content="{Binding Option2}" IsChecked="{Binding Option2}" ></CheckBox>
  <CheckBox x:Name="chk3" Content="{Binding Option3}" IsChecked="{Binding Option3, Mode=OneWay}"></CheckBox>
  <CheckBox x:Name="chk4" Content="{Binding Option4}" IsChecked="{Binding Option4, Mode=OneWay}"></CheckBox>
  </StackPanel>
 
 
 
  </StackPanel>
  </DataTemplate>
  </sdk:DataGridTemplateColumn.CellTemplate>
  </sdk:DataGridTemplateColumn>
  </sdk:DataGrid.Columns>
  </sdk:DataGrid>