11,571 questions
Check this method:
string example = "11/04/1920";
DateTime date = DateTime.Parse( example, CultureInfo.GetCultureInfo( "en-US" ) );
DateTime today = DateTime.Today;
int age = today.Year - date.Year;
if( date.AddYears( age ) > today ) age -= 1;
if( age >= 16 )
{
// . . .
}