[轉][C#]c# 將JSON轉化為list實體類，將list實體類轉化為JSON字串

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原文地址：http://wo13145219.iteye.com/blog/2022667

 

using System;using System.Collections;using System.Configuration;using System.Data;using System.Linq;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.HtmlControls;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Xml.Linq;using System.IO;using System.Text;using System.Runtime.Serialization.Json;using System.Collections.Generic;using System.Reflection;using System.Web.Script.Serialization;namespace AjaxTest{    public partial class Json : System.Web.UI.Page    {        protected void Page_Load(object sender, EventArgs e)        {            //Response.Write(getJsonInfo());            //string strReg = "\\\\";            //strReg = strReg.Replace("\\\\", "\\");            ////Response.Write(strReg);            //方法一            Response.Write(disJsonInfo(getObjectByJson(getJsonInfo())));      //方法二            Response.Write(JsonInfo.getInfo());        }        /// <summary>        /// 擷取將實體類轉換為json資料（目的是為了更快在網頁上傳遞資料）        /// </summary>        /// <returns></returns>        public string getJsonInfo()        {            UserInfo userInfo = new UserInfo();            //userInfo.strNameInfo = "張三";            //userInfo.intAgeInfo = 23;            //userInfo.intTelInfo = 66666;            //userInfo.strAddrInfo = "北京市";            //userInfo.strPasswordInfo = "yhx.123";            userInfo.strName = "張三";            userInfo.intAge = 23;            userInfo.strPsd = "yhx.123";            userInfo.intTel = 2324;            userInfo.strAddr = "北京市";            //將對象序列化json            DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(UserInfo));            //建立儲存區為記憶體流            System.IO.MemoryStream ms = new MemoryStream();            //將json字串寫入記憶體流中            serializer.WriteObject(ms, userInfo);            System.IO.StreamReader reader = new StreamReader(ms);            ms.Position = 0;            string strRes = reader.ReadToEnd();            reader.Close();            ms.Close();            return strRes;        }        /// <summary>        /// 將json資料轉換成實體類           /// </summary>        /// <returns></returns>        private static List<UserInfo> getObjectByJson(string jsonString)        {            // 執行個體化DataContractJsonSerializer對象，需要待序列化的物件類型            DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(List<UserInfo>));            //把Json傳入記憶體流中儲存            jsonString = "[" + jsonString + "]";            MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(jsonString));            // 使用ReadObject方法還原序列化成對象            object ob = serializer.ReadObject(stream);            List<UserInfo> ls = (List<UserInfo>)ob;            return ls;        }        /// <summary>        /// 在頁面上顯示轉換為實體類資料        /// </summary>        private string  disJsonInfo(List<UserInfo> us)        {            string strItem = "";            foreach(var item in us )            {                strItem += item.strName + ":" + item.strPsd + ":" + item.intAge + ":" + item.intTel + ":" + item.strAddr + "<br/>";            }            return strItem;        }    }    /// <summary>    /// 使用者實體類    /// </summary>    public class UserInfo    {        //使用者名稱        public string strName { get; set; }        //年齡        public int intAge { get; set; }        //密碼        public string strPsd { get; set; }        //電話號碼         public int intTel { get; set; }        //地址        public string strAddr { get; set; }    }    /// <summary>    /// 將json資料轉換成實體類（方法二）    /// </summary>    public static class JsonInfo    {        /// <summary>        /// 擷取將實體類轉換為json資料（目的是為了更快在網頁上傳遞資料）        /// </summary>        /// <returns></returns>        public static string getJsonInfo()        {            UserInfo userInfo = new UserInfo();            userInfo.strName = "張三";            userInfo.intAge = 23;            userInfo.strPsd = "yhx.123";            userInfo.intTel = 2324;            userInfo.strAddr = "北京市";            //將對象序列化json            DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(UserInfo));            //建立儲存區為記憶體流            System.IO.MemoryStream ms = new MemoryStream();            //將json字串寫入記憶體流中            serializer.WriteObject(ms, userInfo);            System.IO.StreamReader reader = new StreamReader(ms);            ms.Position = 0;            string strRes = reader.ReadToEnd();            reader.Close();            ms.Close();            return strRes;        }        /// <summary>        ///         /// </summary>        /// <returns></returns>        public static string getInfo()        {            string JsonStr = "["+getJsonInfo()+"]";            List<UserInfo> products;            products = JsonInfo.JSONStringToList<UserInfo>(JsonStr);            string strItem = "";            foreach (var item in products)            {                strItem += item.strName + ":" + item.strPsd + ":" + item.intAge + ":" + item.intTel + ":" + item.strAddr + "<br/>";            }            return strItem;        }        /// <summary>        /// 返回List集合對象        /// </summary>        /// <typeparam name="T"></typeparam>        /// <param name="JsonStr"></param>        /// <returns></returns>        public static List<T> JSONStringToList<T>(this string JsonStr)        {            JavaScriptSerializer Serializer = new JavaScriptSerializer();            List<T> objs = Serializer.Deserialize<List<T>>(JsonStr);            return objs;        }        /// <summary>        ///         /// </summary>        /// <typeparam name="T"></typeparam>        /// <param name="json"></param>        /// <returns></returns>        public static T Deserialize<T>(string json)        {            T obj = Activator.CreateInstance<T>();            using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(json)))            {                DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType());                return (T)serializer.ReadObject(ms);            }        }    }}

 

[轉][C#]c# 將JSON轉化為list實體類，將list實體類轉化為JSON字串