asp.net自动完成字段

I need to autocomplete a form's textboxes based on the input of the first text box.

Basically you enter a name in the first text box, that is searched in a SQL table and if found, the remaining text boxes are filled with the relevant information.

I did come across the ajax control toolkit AutoCompleteExtender but that only seems to work for one text box.

How can I auto populate the remaining text boxes? Is there a way to do that with the AutoCompleteExtender?