I have followed your tutorial on how to create a hierarchy using the GridView. Everything works perfectly except for one small issue. If there are no related records in a particular child, I don't get an Add New Row line (??), I therefore cannot add the first child record to the child table using the GridVew. If there is at least one related record, the Add New Row line is visible and allows me to add a new row.
Some help on this matter will be much appreciated