C#判断是否是节假日

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using Newtonsoft.Json.Linq; using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks;   namespace holiday {     class Program     {         static void Main(string[] args)         {             //引用Newtonsoft.Json.dll             //             //http://www.downza.cn/soft/212414.html 下载地址               bool isHoliday = IsHolidayByDate("20180101");           }           /// <summary>         /// 判断是不是节假日,节假日返回true         /// </summary>         /// <param name="date">日期格式：yyyyMMdd</param>         /// <returns></returns>         public static bool IsHolidayByDate(string date)         {             bool isHoliday = false;             System.Net.WebClient WebClientObj = new System.Net.WebClient();             System.Collections.Specialized.NameValueCollection PostVars = new System.Collections.Specialized.NameValueCollection();             PostVars.Add("d", date);//参数             try             {                    //  用法举例<br>                 //  检查具体日期是否为节假日，工作日对应结果为 0, 休息日对应结果为 1, 节假日对应的结果为 2；                 //   检查一个日期是否为节假日 http://www.easybots.cn/api/holiday.php?d=20130101                //  检查多个日期是否为节假日 http://www.easybots.cn/api/holiday.php?d=20130101,20130103,20130105,20130201               //获取2012年1月份节假日 http://www.easybots.cn/api/holiday.php?m=201201              //获取2013年1 / 2月份节假日 http://www.easybots.cn/api/holiday.php?m=201301,201302                   byte[] byRemoteInfo = WebClientObj.UploadValues(@"http://www.easybots.cn/api/holiday.php", "POST", PostVars);//请求地址,传参方式,参数集合                 string sRemoteInfo = System.Text.Encoding.UTF8.GetString(byRemoteInfo);//获取返回值                   string result = JObject.Parse(sRemoteInfo)[date].ToString();                 if (result == "0")                 {                     isHoliday = false;                 }                 else if (result == "1" || result == "2")                 {                     isHoliday = true;                 }             }             catch             {                 isHoliday = false;             }             return isHoliday;         }     } }