ASP.NET根據日期擷取星座方法！

    /// <summary>返回星座
    /// 
    /// </summary>
    /// <param name="date">日期</param>
    /// <returns></returns>
    public static string GetXinZuo(string date)
    {
        DateTime d;
        if (DateTime.TryParse(date, out d))
        {
            d = DateTime.Parse(d.Month + "-" + d.Day);
            if (d >= DateTime.Parse("03-21") && d <= DateTime.Parse("04-19"))
            {
                return "白羊座";
            }
            else if (d >= DateTime.Parse("04-20") && d <= DateTime.Parse("05-20"))
            {
                return "金牛座";
            }
            else if (d >= DateTime.Parse("05-21") && d <= DateTime.Parse("06-21"))
            {
                return "雙子座";
            }
            else if (d >= DateTime.Parse("06-22") && d <= DateTime.Parse("07-22"))
            {
                return "巨蟹座";
            }
            else if (d >= DateTime.Parse("07-23") && d <= DateTime.Parse("08-22"))
            {
                return "獅子座";
            }
            else if (d >= DateTime.Parse("08-23") && d <= DateTime.Parse("09-22"))
            {
                return "處女座";
            }
            else if (d >= DateTime.Parse("09-23") && d <= DateTime.Parse("10-23"))
            {
                return "天秤座";
            }
            else if (d >= DateTime.Parse("10-24") && d <= DateTime.Parse("11-22"))
            {
                return "天蠍座";
            }
            else if (d >= DateTime.Parse("11-23") && d <= DateTime.Parse("12-21"))
            {
                return "射手座";
            }
            else if ((d >= DateTime.Parse("12-22") && d <= DateTime.Parse("12-31")) ||
                (d >= DateTime.Parse("01-01") && d <= DateTime.Parse("01-19")))
            {
                return "摩羯座";
            }
            else if (d >= DateTime.Parse("01-20") && d <= DateTime.Parse("02-18"))
            {
                return "水瓶座";
            }
            else if (d >= DateTime.Parse("02-19") && d <= DateTime.Parse("03-20"))
            {
                return "雙魚座";
            }
            else
            {
                return "未知日期";
            }
        }
        else
        {
            return "日期格式錯誤";
        }
    }