public string ChineseTimeNow = ""; 
public string ForignTimeNow = ""; 
private static ChineseLunisolarCalendar calendar = new ChineseLunisolarCalendar(); 
private static string ChineseNumber = "〇一二三四五六七八九"; 
public const string CelestialStem = "甲乙丙丁戊己庚辛壬癸"; 
public const string TerrestrialBranch = "子丑寅卯辰巳午未申酉戌亥"; 
public static readonly string[] ChineseDayName = 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"}; 
public static readonly string[] ChineseMonthName = new string[] { "正", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二" }; 

override protected void Page_Load(object sender, EventArgs e) 
{ 
        base.Page_Load(sender, e); 
        userName = Session["Admin"].ToString(); 
        ChineseTimeNow=GetChineseDate(DateTime.Now); 
        ForignTimeNow = DateTime.Now.GetDateTimeFormats('D')[0].ToString(); 
} 

/// <summary> 
/// 獲取一個公歷日期對應的完整的農歷日期 
/// </summary> 
/// <param name="time">一個公歷日期</param> 
/// <returns>農歷日期</returns> 
public string GetChineseDate(DateTime time) 
{ 
        string strY = GetYear(time); 
        string strM = GetMonth(time); 
        string strD = GetDay(time); 
        string strSB = GetStemBranch(time); 
        string strDate = strY + "(" + strSB + ")年 " + strM + "月 " + strD; 
        return strDate; 
} 
/// <summary> 
/// 獲取一個公歷日期的農歷干支紀年 
/// </summary> 
/// <param name="time">一個公歷日期</param> 
/// <returns>農歷干支紀年</returns> 
public string GetStemBranch(DateTime time) 
{ 
        int sexagenaryYear = calendar.GetSexagenaryYear(time); 
        string stemBranch = CelestialStem.Substring(sexagenaryYear % 10 - 1, 1) + TerrestrialBranch.Substring(sexagenaryYear % 12 - 1, 1); 
        return stemBranch; 
} 

/// <summary> 
/// 獲取一個公歷日期的農歷年份 
/// </summary> 
/// <param name="time">一個公歷日期</param> 
/// <returns>農歷年份</returns> 
public string GetYear(DateTime time) 
{ 
        StringBuilder sb = new StringBuilder(); 
        int year = calendar.GetYear(time); 
        int d; 
        do 
        { 
            d = year % 10; 
            sb.Insert(0, ChineseNumber[d]); 
            year = year / 10; 
        } while (year > 0); 
        return sb.ToString(); 
} 

/// <summary> 
/// 獲取一個公歷日期的農歷月份 
/// </summary> 
/// <param name="time">一個公歷日期</param> 
/// <returns>農歷月份</returns> 
public string GetMonth(DateTime time) 
{ 
        int month = calendar.GetMonth(time); 
        int year = calendar.GetYear(time); 
        int leap = 0; 
 
        //正月不可能閏月 
        for (int i = 3; i <= month; i++) 
        { 
            if (calendar.IsLeapMonth(year, i)) 
            { 
                leap = i; 
                break; //一年中最多有一個閏月 
            } 
 
        } 
        if (leap > 0) month--; 
        return (leap == month + 1 ? "閏" : "") + ChineseMonthName[month - 1]; 
} 

/// <summary> 
/// 獲取一個公歷日期的農歷日 
/// </summary> 
/// <param name="time">一個公歷日期</param> 
/// <returns>農歷日</returns> 
public string GetDay(DateTime time) 
{ 
        return ChineseDayName[calendar.GetDayOfMonth(time) - 1]; 
}

<table style=""> 
 <tr valign="bottom"> 
<td valign="bottom"> <%=ForignTimeNow%><br /></td>> 
   </tr> 
   <tr valign="bottom"> 
  <td valign="bottom"> <%=ChineseTimeNow %></td> 
 </tr> 
 </table>