to execute the query

Hi

This is samiuddin.

I want to execute a query on the database to fetch the records depending on the value selected from the list box. so that i can populate the two text fields

I am having list box which contains Stuid. Like sut01, stu02, stu03 and so on.
If the student select his id i want to populate his name and branch in the corresponding text fields. For this i want to run a query on the database to fetch the name and branch of the student depending on the stuid selected from the list box