how to access control in DataGrid.RowDetailsTemplate in runtime

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how to access txtName in DataGrid.RowDetailsTemplate in runtime :

my code :

C#

<DataGrid ColumnWidth="*" Name="dgUsers" Grid.ColumnSpan="5" Grid.Row="4" Margin="10,0,10,4"
                                  AutoGenerateColumns="False" CanUserAddRows="False" CanUserDeleteRows="False"
                                  IsReadOnly="True"
                                  SelectionMode="Single" SelectionUnit="FullRow" HeadersVisibility="Column">
                            <DataGrid.Columns>
                                <DataGridTextColumn x:Name="Name" Header="Name"  Binding="{Binding Path=Name}"/>
                                <DataGridTextColumn x:Name="Family" Header="Family"  Binding="{Binding Path=Family}"/>
                            </DataGrid.Columns>
                            <DataGrid.RowDetailsTemplate>
                                <DataTemplate>
                                    <Grid Margin="0,10,0,10" >
                                        <TextBox Name="txtName" Margin="0,2,0,2" Text="{Binding Path=Name}" />
                                        <TextBox Name="txtFamily" Margin="0,2,0,2" Text="{Binding Path=Family}" />
                                        <TextBox Name="txtUserName" Margin="0,2,0,2" Text="{Binding Path=UserName}"  />
                                            <Button Background="#FF7F9D0E" Height="60" Name="btnDelete" TabIndex="8" Width="60" Margin="30,0,30,0" Click="BtnDeleteClick">
                                    </Grid>

                                </DataTemplate>
                            </DataGrid.RowDetailsTemplate>
                        </DataGrid>

i want access to txtName in event BtnDeleteClick.

Posted 5-Oct-12 8:17am

mmd20092010

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Thomas Duwe 8-Apr-13 2:57am

Do you want access to the TextBox or the bound value of the TextBox?

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Member 16206966 · Answer 1 · 2024-02-20T20:41:00

The desired RowDetailsTemplate content is available just then the row is expanded.
Till this event (see LoadingRowDetails) the content is null and Try to find it with DataGridDetailsPresenter.ContentTemplate leads to an exception:
System.InvalidOperationException
HResult=0x80131509
Message=Operation Is valid only for elements using that template.
Source=PresentationFramework
StackTrace:
at System.Windows.FrameworkTemplate.FindName(String name, FrameworkElement templatedParent)
at ProductionOverviewModule.View.ProductionOrdersGrid.GetRowDetailTemplateGrids() in fileName.cs:line 86

for more about see link https://stackoverflow.com/questions/5679648/why-would-this-contenttemplate-findname-throw-an-invalidoperationexception-on[^]