BLToolkit: Public read-only properties

Question

Assume I have a business object that has some properties that should be read-only. For example:

public class Order
{
     ...
     public DateTime OrderDate { get; set; }
     ...
     public decimal OrderTotal { get; set; }
}

Also assume that OrderTotal is a calculated value returned by a stored proc that cannot be set by the application (whereas OrderDate can). Normally I would simply write the OrderTotal without a public setter:

public decimal OrderTotal { get; private set; }

However if I do so BLToolkit will no longer set the value of this property. I also already tried to write this as an internal property and defining BLToolkit as a friend assembly (InternalsVisibleTo("BLToolkit.4, PublicKey=xyz")) with no success.

How can I write a property without a public setter that can still be populated by BLToolkit?

Answer 1

There is a Storage Property on the MapField Attribute, maybe that will help

    public class Class1
    {
        int _int32 = 0;
        [MapField(Storage = "_int32")]
        public int Int32
        {
            get { return _int32; }
        }
    }

Answer 2

I don't think you can do that, but if I understand you correctly you don't need it. If OrderTotal is returned from stored procedure than it is just fine if you leave it as it is. Unless Order class is representing the actual Order table in the database, you won't have any problem if you accidentally update OrderTotal.