1namespace Gorilla.Commons.Utility
 2{
 3    static public class DateExtensions
 4    {
 5        static public Date plus_years(this Date date, int years)
 6        {
 7            return date.to_date_time().AddYears(years);
 8        }
 9
10        static public Date plus_days(this Date date, int days)
11        {
12            return date.to_date_time().AddDays(days);
13        }
14
15        static public Date minus_days(this Date date, int days)
16        {
17            return date.to_date_time().AddDays(-days);
18        }
19
20        static public Date add_months(this Date date, int months)
21        {
22            return date.to_date_time().AddMonths(months);
23        }
24    }
25}