Short "if" statement without "else"

Question

I have a class:

public class DriverShortInfoElement
{
    ......
    public DateTime? VistracksDateAdded { get; set; }
}

and I want to fill it by data from DbContext. I want to fill VistracksDateAdded only some condition is true, otherwise leave as null:

I try such way:

var list = (from i in _db.Drivers
            select new DriverShortInfoElement()
            {
                .....
                VistracksDateAdded = (i.ProblemSyncToVistracksDriver != null) ? i.ProblemSyncToVistracksDriver.DateAdded : null
            }).ToList();

but compilation error. How to do it this simple thing?

Answer 1

I guess DateAdded is a DateTime. If you use the conditional operator you either have to cast the null to DateTime? or use new Nullable<DateTime>() because there is no implicit conversion possible between null and DateTime:

VistracksDateAdded = i.ProblemSyncToVistracksDriver != null
    ? i.ProblemSyncToVistracksDriver.DateAdded 
    : new Nullable<DateTime>()