How to get the dropdown selected values at edit mode in gridview

I have a gridview with footer template which has dropdownlists.. I am populating these dropdownlists at row_created event of gridview..

When i want to update any record and when user clicks edit in the gridview i must get the dropdownlists and the values which were already selected previously for that particular item .. How to do this?

In the row data bound event i get all the dropdownlists populated but they are not the one which was selected. How to display values in dropdownlist which was already selected earlier?