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Dynamic Data Error - "'DropDownList1' has a SelectedValue which is invalid because …"

During my first investigation of Dynamic Data Support at .NET 3.5 environment, I've found that even Microsoft has bug :-)))

After the following great instructions of following screen-cast I've finished in few minutes with applications that allows me to maintain all my database tables. The problem is that already at third screen I've played with I got following error message:

'DropDownList1' has a SelectedValue which is invalid because it does not exist in the list of items.

Fortunately, I'm not the first who is plying with Dynamic Data at .NET 3.5 so at this blog you can find fix and good explanation of this bug.

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