How to edit a particular row in the table ctrl when a push button is clickd

Hi Experts,

How to edit a particular row (except the Primary keys) after selecting it in the TABLE CONTROL when a

push button is clicked in the table control.

For Eg. If you have a push button say "Modify", the particular row what we select in the table control should be in a

editable mode after clicking "Modify" Push button.

Please help me out.

Thanks in advance.