you can also
in FormView Choose push the samr arrow edite template
and in ansetr mode go to the category text box and add a dropDownList
push the smart arrow again and shoose select data sourse
then in the wizard windo select ur data source and then select the data that you want to be display and the value that u want to be enter the table.
choose ok and then enablePostBack
and run Your Pro and ISA you will fin the desire result