dropdownlist

i want to do dropdownlist such that in dropdownlist i will able to select the item if it is available otherwise adding item in the same textdfield of dropdownlist is possible and that item must be populated in the same dropdownlist …is it possible to do give me same idea so that i will move forward

yes richard you can do that right next to your select box you can have link to thats says something like add new and you can either renderPartial in a lightbox and use ajax to add the item in the database or show a field below the drop down list with