Hi,

I want to calculate the age in years so I have this code:

        public static int CalculateAge(DateTime? StartDate, DateTime CurrentDate)
        {

            int YearsPassed = CurrentDate.Year - StartDate.Year;
            // Are we before the birth date this year? If so subtract one year from the mix
            if (CurrentDate.Month < StartDate.Month || (CurrentDate.Month == StartDate.Month && CurrentDate.Day < StartDate.Day))
            {
                YearsPassed--;
            }
            return YearsPassed;
        }

I call this code like this:

int policyYear = CalculateAge(this.Entity.IssueDate, DateTime.Now);

this.Entity.IssueDate could have a null value. Of course I get errors like this:

'System.Nullable<System.DateTime>' does not contain a definition for 'Year' and no extension method 'Year' accepting a first argument of type 'System.Nullable<System.DateTime>' could be found

I've tried putting an if {this.Entity.IssueDate != null} around my call to the function and making th eparameter not nullable, but that hasn't worked. How do I adjust this code to work?