I have two tables for examamle (Table1 : ID, Sector, Category) (Table2: ID, Category, Title) when I inlclude two drop down list box in form I'm getteing error ( 'dropdownlist1' has a SelectedValue which is invalid because it does not exist in the list of items.) I'm passing paramenter from dropdownlist1 to dropdownlist2.
Please help.
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