invalidoperationexception

There is paradox in the exception description: Nullable object must have a value (?!) This is the problem: I have a DateTimeExtended class, that has { DateTime? MyDataTime; int? otherdata; } and a constructor DateTimeExtended(DateTimeExtended myNewDT) { this.MyDateTime = myNewDT.MyDateTime.Value; this.otherdata = myNewDT.otherdata; } running this code DateTimeExtended res = new DateTimeExtended(oldDTE); throws an InvalidOperationException … Read more