ASP.NET Web Forms DropDownList has a SelectedValue which is invalid because it does not exist in the list of items

Question

First of all there has been questions ( DropDownList has a SelectedValue which is invalid because it does not exist in the list of items , DropDownList "has a SelectedValue

Answer 1

I've submitted a bug on Connect for the issue. It was resolved as "Won't fix" which in my mind means it is in fact a bug. A workaround was provided:

ddlTest.Items.Clear();
ddlTest.SelectedValue = null;

https://connect.microsoft.com/VisualStudio/feedback/details/666808/asp-net-dropdownlist-selectedvalue-is-persisted-which-results-in-exception-if-the-control-is-databound-second-time

I kind of consider this the answer.