我就廢話不多說啦，大家還是直接看程式碼吧~

byte[] bUserInfoSearch = new byte[1024 * 10]; //10kb大小
   Marshal.Copy(lpBuffer,bUserInfoSearch,bUserInfoSearch.Length);
   string strUserInfoSearch = System.Text.Encoding.UTF8.GetString(bUserInfoSearch);
   CUserInfoSearch m_JsonUserInfoSearch = new CUserInfoSearch();
   //序列化這個字串
   m_JsonUserInfoSearch = JsonConvert.DeserializeObject<CUserInfoSearch>(strUserInfoSearch);
  public class CUserInfoSearch
  {
   public CUserInfoSearchContent UserInfoSearch { get; set; }
  }
  public class CUserInfoSearchContent
  {
   public string searchID { get; set; }
   public string responseStatusStrg { get; set; } //查詢狀態字串描述: OK-查詢結束,MORE-還有資料等待查詢,NO MATCH-沒有匹配資料
   public int numOfMatches { get; set; } //本次返回的記錄條數
 　　　　　　
   public int totalMatches { get; set; } //符合條件的記錄總條數
public List<CUserInfoContent> UserInfo { get; set; } }
 public class CUserInfoContent
  {
   public string employeeNo { get; set; }
   public string name { get; set; }
   public string userType { get; set; }
   public bool closeDelayEnabled { get; set; }
   public CVaild Valid { get; set; }
   public string belongGroup { get; set; }
   public string password { get; set; }
   public string doorRight { get; set; }
   public List<CRightPlan> RightPlan { get; set; }
   public int maxOpenDoorTime { get; set; }
   public int openDoorTime { get; set; }
   public int roomNumber { get; set; }
   public int floorNumber { get; set; }
   public bool doubleLockRight { get; set; }
   public bool alwaysOpenRight { get; set; }
   public bool localUIRight { get; set; }
   public string userVerifyMode { get; set; }
   public bool checkUser { get; set; }
  }
  public class CVaild
  {
   public bool enable { get; set; }
   public string beginTime { get; set; }
   public string endTime { get; set; }
   public string timeType { get; set; }
  }
  public class CRightPlan
  {
   public int doorNo { get; set; }
   public string planTemplateNo { get; set; }
  }

json字串為

{
 "UserInfoSearch": {
  "searchID": "1","responseStatusStrg": "MORE","numOfMatches": 2,"totalMatches": 4,"UserInfo": [{
    "employeeNo": "1","name": "管理員(131374","userType": "normal","closeDelayEnabled": false,"Valid": {
     "enable": false,"beginTime": "0-00-00T00:00:00","endTime": "0-00-00T00:00:00","timeType": "local"
    },"belongGroup": "","password": "","doorRight": "1","RightPlan": [{
      "doorNo": 1,"planTemplateNo": "1"
     }],"maxOpenDoorTime": 0,"openDoorTime": 0,"roomNumber": 1,"floorNumber": 1,"localUIRight": false,"numOfCard": 0,"numOfFP": 0,"numOfFace": 0
   },{
    "employeeNo": "2","name": "123456","numOfFace": 1
   }]
 }
}

補充：C#使用NewtonSoft操作Json實戰

上程式碼~

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System.Collections.Generic;
using System.Data;
using Newtonsoft.Json.Converters; 
namespace Dd.Utility
{
  public static class JsonHelper
  {
    /// <summary>
    /// Json To Object
    /// </summary>
    /// <param name="json">Json</param>
    /// <returns>Object</returns>
    public static object ToObjct(this string json)
    {
      return json == null ? null : JsonConvert.DeserializeObject(json);
    }
    /// <summary>
    /// Object To Json
    /// </summary>
    /// <param name="obj">Object</param>
    /// <returns>Json</returns>
    public static string ToJson(this object obj)
    {
      return JsonConvert.SerializeObject(obj);
    }
    /// <summary>
    /// Json To Object T
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="Json"></param>
    /// <returns></returns>
    public static T ToObject<T>(this string json)
    {
      return json == null ? default(T) : JsonConvert.DeserializeObject<T>(json);
    }
    /// <summary>
    /// Json To List
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="Json"></param>
    /// <returns></returns>
    public static List<T> ToList<T>(this string json)
    {
      return json == null ? null : JsonConvert.DeserializeObject<List<T>>(json);
    }
    /// <summary>
    /// Json To Table
    /// </summary>
    /// <param name="Json"></param>
    /// <returns></returns>
    public static DataTable JsonToTable(this string json)
    {
      return json == null ? null : JsonConvert.DeserializeObject<DataTable>(json);
    }
 
    /// <summary>
    /// Table To Json
    /// </summary>
    /// <param name="dataTable"></param>
    /// <returns></returns>
    public static string TableToJson(this DataTable dataTable)
    {
      IsoDateTimeConverter timeFormat = new IsoDateTimeConverter();
      timeFormat.DateTimeFormat = "yyyy-MM-dd HH:mm:ss";
      return dataTable == null ? "" : JsonConvert.SerializeObject(dataTable,new DataTableConverter(),timeFormat);
    }
  }
}

	var user = new { id = "",name = "",sex = "",age = "" };
	user = JsonConvert.DeserializeAnonymousType("{\"id\":\"1\",\"name\":\"張三\",\"sex\":\"男\",\"age\":\"18\"}",user);
 
	Console.WriteLine(user.id + " " + user.name + " " + user.sex + " " + user.age);
	//輸出結果：1 張三 男 18
 
	/
 
	var userList = new[] { new { id = "1",name = "張三",sex = "男",age = "18" },new { id = "2",name = "李四",sex = "女",age = "17" } };
 
	//匿名序列化集合
	string userSerialize = JsonConvert.SerializeObject(userList);
	Console.WriteLine(userSerialize);
	//輸出結果：[{"id":"1","name":"張三","sex":"男","age":"18"},{"id":"2","name":"李四","sex":"女","age":"17"}]
 
	//匿名反序列化集合
	var userDeserialize = JsonConvert.DeserializeAnonymousType(userSerialize,new[] { new { id = "",age = "" } });
	foreach (var userTemp in userDeserialize)
	{
		Console.Write(userTemp.id + " " + userTemp.name + " " + userTemp.sex + " " + userTemp.age+" | ");
	}
	//輸出結果：1 張三 男 18 | 2 李四 女 17 | 
 
	/
 
	JArray jArrayUser = JArray.Parse("[{\"id\":\"1\",\"age\":\"18\"},{\"id\":\"2\",\"name\":\"李四\",\"sex\":\"女\",\"age\":\"17\"}]");
	foreach (JObject jUser in jArrayUser)
	{
		Console.Write(jUser["id"].ToString() + " " + jUser["name"].ToString() + " " + jUser["sex"].ToString() + " " + jUser["age"].ToString() + " | ");
	}
	//輸出結果：1 張三 男 18 | 2 李四 女 17 | 

以上為個人經驗，希望能給大家一個參考，也希望大家多多支援我們。如有錯誤或未考慮完全的地方，望不吝賜教。