select particular cell and update in gridview when selected from Radiobuttonlist

Hello,
I am using a Gridview in which I insert radiobuttonlist in one column with two items. I need to do is, When I select one item from radiobuttonlist then textbox should appear in next column of particualr row selected and when I select other item from radiobuttonlist then textbox should disapper. Now when I move to other row of GridView and do the same task then previous row work should remain as it is.
I tried it with button instead of radiobuttonlist and it was done but I need to do it with Radiobuttonlist only.
Can anyone help me how can I do this?