I am new to asp.net though not to asp. I want to display two gridboxes, the first with master records and the second with child records linked to the master table id. The idea is to change the child records when the parent record is selected, or ideally, when the page index is changed. Is there any way to do this without a complicated song and dance? I am not using MS SQL Server, but MySQL, so it is not possible to specify a parameter in the Data Source configuration dialog.