Navigating tables inside DataSet

Question

I have a datagrid displaying a dataset's different tables. Typically, the user will search for a string in the dataset, and the datagrid will display 4 or 5 different tables. These tables, when clicked, lead to the corressponding data matching criteria that the user entered. I would like to know how to find the table name of the table the user clicked. It's probably an easy fix, but I am struggling. Thanks in advance. Matt