//without using Object Initializer Syntax
 
                    letter = new Letter();
                    letter.Date = DateTime.Now.Date;
                    letter.RegisterDate = DateTime.Now.Date;
                    letter.LetterType = LetterType.Outgoing;
 
                    letter.LetterInformation = new LetterInformation();
                    letter.LetterInformation.RuntimeState = common.RuntimeState.Added;
                    letter.LetterInformation.Letter = letter;