public void UpdateRC_User(RC_User currentRC_User)
{
this.ObjectContext.AttachAsModified(currentMyEntity, this.ChangeSet.GetOriginal(currentMyEntity));
}
Why my code here throw a exception:
Value cannot be null.
Parameter name: original
I have one entity named RC_User, and RC_User contain a navigation property named RC_SecurityAdmin.
when i update RC_User's property(not naviagtion) only, it'll save entity rightly.
when i update RC_User's property(not naviagtion) and inserting or deleting RC_SecurityAdmin, it'll save rightly too.
when i inserting or deleting RC_SecurityAdmin only, it'll throw execption .....
who can help me?
