DropDownList AppendDataBoundItems (first item to be blank and no duplicates)

Question

I have a DropDownList inside an UpdatePanel that is populated on postback from a SqlDataSource. It has a parameter which is another co

Answer 1

Here's an Idea.

There's a property in the drop down list called AutoPostBack set it to true and then in the code behind you put all the binding method inside the if(!Page.IsPostBack). That worked for me.

regards.