Question

I need to add a custom property to an Entity Framework class, however when I do I get the “The property name XXX specified for type XXX is not valid.” error. Is there some attribute I can give the property so it is ignored and not mapped to anything?

Edit: If I add a custom property, as per Martin’s example below, then the following code will raise the above error at the SaveChanges call.

MyEntities svc = new MyEntities(url);
MyEntity ent = new MyEntity();
ent.MyField = "Hello, world";
svc.AddMyEntity(ent);
svc.SaveChanges();

Answer 1

Here is the answer:
http://social.msdn.microsoft.com/Forums/en-US/adodotnetdataservices/thread/b7a9e01d-c5c2-4478-8f01-00f7f6e0f75f

Edit:
A better link describes the final compact answer of Adding an Attribute to prevent serialization of the Entity when sending to the Service.