how to convert the gridview datas to the table in asp.net

[shgo2540]

i have a gridview as follows:\[code\]Sub marks resulteng 56 pmaths 45 fscience 67 pS.S 78 p\[/code\]im using the mail function to send the marks to the student. how to convert these gridview rows to the table rows or how to pass the gridview datas into mail function as 'message'