Question

So here are 3 tables I’m working with:

I want to delete everything in the ClaimCodingProcedureCodeModifierXref table and all the related rows in ProcedureCodeModifier from a specific ClaimCodingID. Here is my code so far:

using (HCCustDataEntities hc = new HCCustDataEntities())
            {
                var result = (from CPC in hc.ClaimCodingProcedureCodeModifierXrefs
                              where CPC.ClaimCodingID == claimCodingID
                              select CPC);

                foreach (var item in result)
                {
                    hc.DeleteObject(item);
                }
            }

But only data from the Xref table gets deleted. Why doesn’t EF delete the related rows as well?

Answer 1

Use CASCADE DELETE in your relation ship. Entity framework will automaticaly delete the detail / child object when you delete the master record. You dont need to explicitly delete the child records in your relatioship yourself.