Hi, I am trying to create a drop down list like so in chapter 6, but using just one table. But I get this message if I tried to edit a row:"'DropDownList1' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value " The field I am trying to edit is made to a drop down list following exactly what chapter 6 does, and its a vchar(5) attribute.

Also, if i use the initial skeleton folder, will I be able to achieve what chapter 6 does? knowing that the extra files and database tables are not created from the previous chapter? It seems to me that chapter 6 can be a stand alone chapter. Does it rely on any of the materials and files created from the previous chapter?

Thank you