I am developing a form for updating purposes using the FormView. I am using data from one tabel only, it works great using the form without altering anything in it. But there are question on the form such as: "do you need a construction permit? and the answer is yes or no" I will like to use a drop down list in this fields instead of typying yes or no in a text box.
This is very important so that's why I am giving a lot of points
I can not get this drop down list to work. it keeps giving me an error saying: 'DropDownList1' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value