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Alex Rivera
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I have a DropDownList inside an UpdatePanel that is populated on postback from a SqlDataSource . It has a parameter which is another control. I sometimes need multiple postbacks, but what happens is that each time the update panel refreshes, items are added to the DropDownList . So the DropDownList ends up having data that is incorrect, or repeated data. I have the AppendDataBoundItems property set to true because I need the first item to be blank. How can I overcome this problem? Is there another way to have a blank first item? (This DropDownList is in an ASP.NET 2.0 web app, and codebehind is in C#)
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