Find controls in WPF

Consider this data grid in wpf

<DataGrid Name="dataGrid1">
  <DataGrid.Columns>                      
   <DataGridTemplateColumn >
    <DataGridTemplateColumn.CellTemplate>
     <DataTemplate>

               <StackPanel Name= "sp" >
                <TextBlock  Name="textBlock1" />                                                           </StackPanel>

      <DataTemplate>
   <DataGridTemplateColumn.CellTemplate>
 <DataGridTemplateColumn >
<DataGrid.Columns>       
</DataGrid>

To access element  "textBlock1" which is inside stackpanel, we can use the following code.


foreach (StackPanel sp in FindVisualChildren<StackPanel>(dataGrid1))
                    {
                        if (sp.Name == "sp")
                        {
                            TextBlock txt= (TextBlock)sp.FindName("textBlock1");       
                             txt.Text="Hello";
                          }
                        }
                   
 FindVisualChildren
  public static IEnumerable<T> FindVisualChildren<T>(DependencyObject depObj) where T : DependencyObject
        {
            if (depObj != null)
            {
                for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
                {
                    DependencyObject child = VisualTreeHelper.GetChild(depObj, i);
                    if (child != null && child is T)
                    {
                        yield return (T)child;
                    }

                    foreach (T childOfChild in FindVisualChildren<T>(child))
                    {
                        yield return childOfChild;
                    }
                }
            }
        }