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'DropDownList3' has a SelectedValue which is invalid

ahmet ciftcioglu

18y4.7k.NET

Hi guys,

I got this message belove after I reconfigurate my database after long time The only thing that I am sure about is I didn't

touch anything in my asp.codes.

"'DropDownList3' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value "

Can you please help me to figure this out.

Thanks.

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

Blocked Account18y ago
Hi,
I don't know what data type is your column char or varchar? You may need to use a small set of your data to test out this code first. Without seeing your data, it is difficult to continue for this issue. If the column is char type, you may need to use Trim function (Rtrim/Ltrim in sql) to remove white space.

Happy Coding!!