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Ankit Khurana24Ankit Khurana24 

how to bind radio button with picklist values in vf page?

i have 3 radio buttons Asia,Europe and  and a picklist conatining 10 countries.....on selecting Asia only five asian countries shouldbe shown ,on selecting euopre all five european countries shouls be shown and on selecting all ..all 10 countries shouls be shown..

i have made vf page ..and controller ...please let me know how to bind radio button with picklist