Expand Row not working

[GM72]

Hi,

Any reason why this wouldn't work

 private void RadGridView1_RowLoaded(object sender, RowLoadedEventArgs e)
        {
            if (((RadGridView)sender).ChildrenOfType<GridViewRow>().First() != null)
            {
                var row = ((RadGridView)sender).ChildrenOfType<GridViewRow>().First();
                row.IsExpanded = true;
            }
        }

I just want to expand the parent row in a 1 row (hierarchical) grid.... really shouldn't be this difficult?

Thanks