how make font as bold in last column of gridview

Question

Hi folks,

i have question here that, how to make font as bold in last column of gridview.

here, i have total 9 columns in grid as 2010, 2011 ,2012, 2010, 2011 ,2012, 2010, 2011 ,2012

but, here i have different header names  as A for first 3 columns , B for second 3 columns ,C for last 3 columns.

finally, i want to make font as bold for entire 2012 column of C header.how to do ?.

please respond ASAP


Regards
Ravi Gaddam