need to take print out particular field in gridview in asp.net

need to take particular field in asp.net
this is my grid i show in run time 
product             qty                mrp               supplier
a                       1                   100                b

if i click the button i need to print the following data only
product             qty                mrp               
a                       1                   100  

and outside the grid i have date one field i need to print this also 
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