private static void SetValues(Position source, PositionViewModel target)
 {
     if (source.Date != target.Date)
     {
         throw new InvalidOperationException();
     }
     target.Value = source.Value;
 }
        public CalculationViewModel(int termInDays, DateTime startDate)
        {
            var termInDays1 = termInDays;
            ResultOverTime = new PositionViewModel[termInDays1];

            var currentDate = startDate;
            for (var i = 0; i < termInDays1; i++)
            {
                ResultOverTime[i] = new PositionViewModel(currentDate);
                currentDate = currentDate.AddDays(1);
            }
        }