Public default contructor ?

Hi Support, I have been trying to get my SQL2005 table with a CHAR(4) natural key to work with Lightspeed. I followed the instructions found in this thread http://www.mindscapehq.com/forums/thread/260383. I implemented a partial class to override GeneratedId() method, and I can now create new entities on the unit of work.

public partial class Retailer
    {
        [Transient]
        private string _retailerCode;

        public Retailer(string retailerCode)
        {
            if (retailerCode == null) throw new ArgumentNullException("retailerCode");
            _retailerCode = retailerCode;
        }

        protected override object GeneratedId()
        {
            return _retailerCode;
        }
    }

Retailer entity is using default Identity method. However, when I try to call UnitOfWork.FindById(id) it throws the following exception:

Cannot create instance of Orion.Web.ConnectionManagement.Models.Retailer (does it have a public default constructor?)

Do I need to implement a discriminator ?

Thanks in advance, Damien.

You will need a default constructor defined on that class to allow LightSpeed to instantiate new instances of this class.

Jeremy

Ok, of course that makes sense. Added this to the partial class :-

public Retailer() { }

and it all came right.

Thanks Jeremy.