Unable to update the EntitySet 'ItemRankList' because it has a DefiningQuery and no <UpdateFunction> element exists

Question

Any ideas why does the entity framework in LINQ gives following strange error:

Unable to update the EntitySet 'ItemRankList' because it has a DefiningQuery and no element exists in the element to support the current operation.

Answer 1

Guess i should also ask the context... how are you using linq?

Do you have a primary key defined on the table ?

If not add the key and update the EF model.