gridview how to select coloum value

i have gridview like this...........

mobile                     names                                   area
901448765           srinivas , venkat                        hyd
987654321           raju , vamshi ,sunder                 hyd
954326788           shashi ,samatha,prashanthi      hyd




i want output like this...................................
how to select names coloum in first name ....




how to select  only fistname like...
srinivas
raju
shashi
 
plz wrte the code....plz plz