.net core Model对象转换为uri网址参数形式

        /// 

        /// Model对象转换为uri网址参数形式
        /// 
        /// Model对象
        /// 前部分网址
        /// 
        public static string ModelToUriParam(this object obj, string url = "")
        {
            PropertyInfo[] propertis = obj.GetType().GetProperties();
            StringBuilder sb = new StringBuilder();
            sb.Append(url);
            sb.Append("?");
            foreach (var p in propertis)
            {
                var v = p.GetValue(obj, null);
                if (v == null)
                    continue;

                sb.Append(p.Name);
                sb.Append("=");
                sb.Append(HttpUtility.UrlEncode(v.ToString()));
                sb.Append("&");
            }
            sb.Remove(sb.Length - 1, 1);

            return sb.ToString();
        }