private List<BirthDate> getBirthDate()
{
int startdate = 1910;
int id = 1;
List<BirthDate> birthdate = new List<BirthDate>();
while (startdate <= DateTime.Now.Year)
{
birthdate.Add(new BirthDate() { Id = id++, BirthYear = startdate++ });
}
birthdate.Insert(0, null);
return birthdate;
}