ChineseLunisolarCalendar

using System;
using System.Collections.Generic;
using System.Text;
using System.Globalization;

namespace EasyDotNet.Calendar
{
    public class ABC
    {
        private int _year = 1990, _month = 1, _day = 1;
        private string[] dayName = new string[] {
            "初一","初二","初三","初四","初五","初六","初七","初八","初九","初十",
            "十一","十二","十三","十四","十五","十六","十七","十八","十九","二十",
            "廿一","廿二","廿三","廿四","廿五","廿六","廿七","廿八","廿九","三十"};


        private ChineseLunisolarCalendar clc = new ChineseLunisolarCalendar();   
        public ABC(DateTime dt)
        {
            _year = clc.GetYear(dt);
            _month = clc.GetMonth(dt);
            _day = clc.GetDayOfMonth(dt);
        }

        private string _dayname;
        public string GetDayName { get { _dayname = dayName[_day - 1]; return _dayname; } }
        
    }
}

 ABC aa = new ABC(DateTime.Now);
 txt1.Text ="今日是農歷" +aa.GetDayName;