using System; [Serializable] public class Date{ private ushort year; private byte month, day; private DayOfWeek nameOfDay; // Redundant public Date(int year, int month, int day){ this.year = (ushort)year; this.month = (byte)month; this.day = (byte)day; this.nameOfDay = (new DateTime(year, month, day)).DayOfWeek; } public Date(Date d){ this.year = d.year; this.month = d.month; this.day = d.day; this.nameOfDay = d.nameOfDay; } public int Year{get{return year;}} public int Month{get{return month;}} public int Day{get{return day;}} // return this minus other, as of usual birthday calculations. public int YearDiff(Date other){ if (this.Equals(other)) return 0; else if ((new Date(other.year, this.month, this.day)).IsBefore(other)) return this.year - other.year - 1; else return this.year - other.year; } public override bool Equals(Object obj){ if (obj == null) return false; else if (this.GetType() != obj.GetType()) return false; else if (ReferenceEquals(this, obj)) return true; else if (this.year == ((Date)obj).year && this.month == ((Date)obj).month && this.day == ((Date)obj).day) return true; else return false; } // Is this date less than other date public bool IsBefore(Date other){ return this.year < other.year || this.year == other.year && this.month < other.month || this.year == other.year && this.month == other.month && this.day < other.day; } public static Date Today{ get{ DateTime now = DateTime.Now; return new Date(now.Year, now.Month, now.Day);} } public override string ToString(){ return string.Format("{0} {1}.{2}.{3}", nameOfDay, day, month, year); } }