I&#039;ve found the article "DataGrid Web Control: Part 14, Part 2" (http://aspnet.4guysfromrolla.com/articles/040203-1.2.aspx) very useful but...<BR><BR>In the article, it uses FAQ categories, with sub FAQ items listed. There are 2 separate DB queries, one to retrieve the FAQ Categories, then one to retrieve all the FAQ items. <BR><BR>However, in my application I need to choose a select group of "Categories" and "Items". The ones chosen depend on both the category and item, so unless I call 2 very similar queries to pull out the data twice (which will be *far* too slow - trust me!), is there a way of using the master/detail display from one query source?<BR><BR>I hope I&#039;m making sense. Feel free to bug me if I havent.<BR><BR>Thanks,<BR>Van.