Question

I’ve an Entity Framework model (v.1.0) that I’m trying to extends with a calculated property.

I’ve created the partial class to extend the entity object “Offer” in this way:

namespace MyModelNamespace
{
    public partial class Offer
    {
        public bool MyProperty
        {
            get 
            {
                // my stuffs the return true or false
            }
        }
    }
}

It compiles without problem in my assembly, but at runtime, when I’m trying to do something like this:

_myEntities.OfferSet.FirstOrDefault(o=>o.MyProperty);

I retrieve this error:

The number of members in the
conceptual type ‘MyModelNamespace.Offer’ does not match
with the number of members on the
object side type ‘MyModelNamespace.Offer’. Make sure the
number of members are the same.

…any suggestions???

Answer 1

Yes, you can do this. Use the LINQ translations library.