C#/.Net判断是否为周末/节假日

判断节假日请求的api：http://tool.bitefu.net/jiari/

 

        /// <summary>
        /// 判断是不是周末/节假日
        /// </summary>
        /// <param name="date">日期</param>
        /// <returns>周末和节假日返回true，工作日返回false</returns>
        public static async task<bool> isholidaybydate(datetime date)
        {
            var isholiday = false;
            var webclient = new system.net.webclient();
            var postvars = new system.collections.specialized.namevaluecollection
            {
                { "d", date.tostring("yyyymmdd") }//参数
            };
            try
            {
                var day = date.dayofweek;

                //判断是否为周末
                if (day == dayofweek.sunday || day == dayofweek.saturday)
                    return true;

                //0为工作日，1为周末，2为法定节假日
                var byteresult = await webclient.uploadvaluestaskasync("http://tool.bitefu.net/jiari/", "post", postvars);//请求地址,传参方式,参数集合
                var result = encoding.utf8.getstring(byteresult);//获取返回值
                if (result == "1" || result == "2")
                    isholiday = true;
            }
            catch
            {
                isholiday = false;
            }
            return isholiday;
        }

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