Why ItemContainerGenerator.ContainerFromIndex() returns null and how to avoid this behavior?

Question

I\'m using this snippet to analyze the rows I\'ve selected on a datagrid.

for (int i = 0; i < dgDetalle.Items.Count; i++)
{
    DataGridRow row = (DataGri         


        

Answer 1

Use this subscription:

TheListBox.ItemContainerGenerator.StatusChanged += (sender, e) =>
{
  TheListBox.Dispatcher.Invoke(() =>
  {
     var TheOne = TheListBox.ItemContainerGenerator.ContainerFromIndex(0) as ListBoxItem;
       if (TheOne != null)
         // Use The One
  });
};