How Do I Precheck The Check Boxes In Grid View On Page Load

Question

i have a form which displays a gridview and a hidebutton. when ever user checks the rows which he needs and clicks on hide button all these checked rows will be inserted in a table in database.

my scenario

now whenever the page loads all those checked rows from datatable which matches with the rows in the gridview should be prechecked

what would be the best possible way to do it please help me i have no clue