Cathi:

Thank You for the effort you make to understand my language problem. lol...
I am really fustrated with VB.net. Maybe the problem with the Null value is the declaration line. When I define the binding of the variable the value Num_control is null. And I believe is logical to think that if I assign later a value to the row that belong to the Num_control it automatically asign this value to my binding. But this is not the result that I got. So let me know If I need to move my declaration after I populate the row.