How to fetch last row data of a gridview asp.net c # -

i want fetch last row data of gridview , accordingly change colour of each cell depending on value. appreciated.thank in advanced.

if "last row" means footer:

gridviewrow footer = grid.footerrow; 

otherwise:

gridviewrow lastrow = grid.rows.cast<gridviewrow>().last(); 

now can loop lastrow.cells or use lastrow.dataitem if databound recently.