Question

I have the following in my model:

    public string Subject { 
        get { 
            return SubjectReference.GetSubject(SubjectID);
        }
    }

How can I make this so that if the SubjectID is null then the get call will return null? I think there’s a way to do this with the ? operator but can I use this inside of a class for model properties?

Answer 1

How about

public string Subject
{
   get
   {
       return SubjectID == null ? null : SubjectReference.GetSubject(SubjectID);
   }
}

You could consider string.IsNullOrEmpty(SubjectID) instead when an empty string for SubjectID should also result in a null return.

If your property is a reference type then of course null is a legal return value.