How to create checkbox in Gridview

dear friends

i have one table in sql. so i want to perform a one action that if i use select * from my_tablename .so 

 that query should be printed in gridview . (that i knw how to do). but the problem is once the column 

printed in gridview . that time automaticlly one extera column should be added in that gridview containg  CHECKBOXES. and once i check that checkbox

and press a button click . that checkbox row should be added in new table.(using trigger)

 

plz help me