Question

How to access control in DataGridTemplateColumn to get value ?

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="partcount">
                                                    <TextBlock Margin="0,0,5,0" Text="Count"/>
                                                    <TextBox Margin="0,0,5,0" MinWidth="50" Width="Auto" Name="txtcount" Text="{Binding Count}"/>
                                                </StackPanel>
                                            </DataTemplate>
                                        </DataGridTemplateColumn.CellTemplate>
                                    </DataGridTemplateColumn>
       </DataGrid.Columns>
                            </DataGrid>

how to access txtcount ?

Answer 1

You will have to navigate the visual tree to find this element. I wrote a utility class a while back that makes this a little easier, using Linq-to-VisualTree you can find it as follows:

TextBox tb = dgUser.Descendants<TextBox>()
                   .OfType<TextBox>()
                   .Where(t => t.Name == "txtcount")
                   .Single();