How to get Textbox type Cell Value of each row in Datagrid Using WPF

Hi friends,

             There is one issue. How i get DataTemplate Texbox cell value in datagrid of each row.

My grid like this:-

<DataGrid x:Name="dgResult" AutoGenerateColumns="False" Visibility="Visible" Margin="3,140,10,0" VirtualizingStackPanel.IsVirtualizing="False"
                  MaxHeight="325" VerticalAlignment="Top" HorizontalAlignment="Stretch" VerticalScrollBarVisibility="Auto" HorizontalScrollBarVisibility="Auto" Height="325">
            <DataGrid.Columns>
                <DataGridTextColumn Header="{x:Static Res:ResourceMessages.dgRsltnm}" Binding="{Binding Path=TEST_NAME}" Width="325" />
                <DataGridTemplateColumn Header="Sensor" Width="100">                  
                    <DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <ComboBox SelectedIndex="2" Height="22" ItemsSource="{StaticResource SensorList}"/>
                        </DataTemplate>
                    </DataGridTemplateColumn.CellTemplate>
                </DataGridTemplateColumn>
                <DataGridTemplateColumn Header="Value" Width="100">
                    <DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <TextBox Name="tbValue" Width="auto"/>
                        </DataTemplate>
                        </DataGridTemplateColumn.CellTemplate>
                </DataGridTemplateColumn>
                <DataGridTextColumn Header="{x:Static Res:ResourceMessages.dgUnits}"  Binding="{Binding Path=UNITS}"  Width="150"/>
                <DataGridTextColumn Header="{x:Static Res:ResourceMessages.dgNorRange}"  Binding="{Binding Path=NORMAL_RANGE}"  Width="150"/>
                <DataGridTemplateColumn Header="Flag" Width="*">
                    <DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <ComboBox Text="--Select--" IsEditable="True" IsReadOnly="True" Height="22" ItemsSource="{StaticResource FlagList}"/>
                        </DataTemplate>
                    </DataGridTemplateColumn.CellTemplate>
                </DataGridTemplateColumn>
            </DataGrid.Columns>

        </DataGrid>

-----------------------------------------

Actually my task is validation of one cell to another cell.

I have one editable textbox type cell and one dropdown type cell in grid. If i enter text in textbox cell than it must to sellect one dropdown item from the dropdown type cell. This is doing in all rows of the grid

Thanks

Sonesh

sonesh