string jtext = "{\"jiangsu\":[{\"wuxi\":\"無錫\"},{\"suzhou\":\"蘇州\"},{\"nanjing\":\"南京\"}] }";

//解析Json物件
JObject a = (JObject)JsonConvert.DeserializeObject(jtext);
string a1 = a["jiangsu"][2]["nanjing"].ToString();
//對Json資料進行解析
Console.WriteLine(a1);
Console.ReadLine();

//解析Json陣列
string a4 = a["jiangsu"].ToString();
//從Json資料中取一個數組出來
JArray a2 = (JArray)JsonConvert.DeserializeObject(a4);
string a3 = a2[2]["nanjing"].ToString();
//對Json資料進行解
Console.WriteLine(a3);
Console.ReadLine();
---------------------
案例H3BPM主資料同步：

using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Net;
using System.Security.Cryptography;
using System.Text;
using System.Web;
using System.Web.Services;
using System.Xml;
using Newtonsoft.Json;
using OThinker.H3.BizBus.BizService;
using OThinker.H3;
using OThinker.H3.Data;
using OThinker.H3.WorkSheet;
using System.Collections;
using System.Reflection;
using System.Web.Script.Serialization;
using Newtonsoft.Json.Linq;
using log4net;

namespace OThinker.H3.Portal
{
/// <summary>
/// MaterialMasterDataSynchro 的摘要說明
/// </summary>
/// <summary>
/// BPMFsscWebService 的摘要說明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
// 若要允許使用 ASP.NET AJAX 從指令碼中呼叫此 Web 服務，請取消註釋以下行。
// [System.Web.Script.Services.ScriptService]
public class MaterialMasterDataSynchro : IBaseJob
{
public MaterialMasterDataSynchro()
{
//
// TODO: 在此處新增建構函式邏輯
//
}
private readonly ILog _logger = LogManager.GetLogger(typeof(JobSyncSapSupplier));

public override void JobMethod(ZD_SyncTaskConfig plan)
{
GetMaterialInfo(plan.SyncSuccessBeginTime.ToString("yyyy.MM.dd"));
}

[WebMethod]
public string HelloWorld()
{
return "Hello World";
}
private IEngine _Engine = null;
/// <summary>
/// 流程引擎的介面，該介面會比this.Engine的方式更快，因為其中使用了快取
/// </summary>
public IEngine Engine
{
get
{
if (OThinker.H3.WorkSheet.AppConfig.ConnectionMode == ConnectionStringParser.ConnectionMode.Mono)
{
return OThinker.H3.WorkSheet.AppUtility.Engine;
}
return _Engine;
}
set
{
_Engine = value;
}
}

public string AdminId
{
get
{
return OThinker.H3.WorkSheet.AppUtility.Engine.Organization.GetUnitByCode("Administrator").ObjectID;
}
}
ReturnResult result;

/// <summary>
/// SAP獲得物料主資料資訊
/// string Json = "{\"EX_RETURN\":[{\"MATNR\":\"test\"}] }";
/// </summary>
[WebMethod(Description = "獲取SAP物料主資料資訊")]
public string GetMaterialInfo(string lastSuccessDate)
{

DataTable dataTable = new DataTable(); //例項化
string Json = string.Empty;
try
{
Dictionary<string, object> dic = new Dictionary<string, object>();
//List<Item> list = new List<Item>();
//dic.Add("MT_MM_WLZSJ.IM_INPUT", "");
Json = GetInterfaceDataService.ExecuteBizNonQueryToJson("MaterialMasterDataInterface", "SI_MM_WLZSJ_OS", dic);
JavaScriptSerializer javaScriptSerializer = new JavaScriptSerializer();
javaScriptSerializer.MaxJsonLength = Int32.MaxValue; //取得最大數值
JObject jObject = (JObject)JsonConvert.DeserializeObject(Json); //此處放json資料
string ex_return = jObject["EX_RETURN"].ToString();
ArrayList arrayList = javaScriptSerializer.Deserialize<ArrayList>(ex_return);
foreach (Dictionary<string, object> dictionary in arrayList)
{
if (dataTable.Columns.Count == 0)
{
foreach (string current in dictionary.Keys)
{
dataTable.Columns.Add(current, dictionary[current].GetType());
}
}
DataRow dataRow = dataTable.NewRow();
foreach (string current in dictionary.Keys)
{
dataRow[current] = dictionary[current];
}
dataTable.Rows.Add(dataRow); //迴圈新增行到DataTable中
}
}
catch (Exception ex)
{
result = new ReturnResult(false, "SAP主資料增量同步失敗！" + ex);
}
if (dataTable.Rows.Count > 0)
{
StringBuilder sb = new StringBuilder();
string sql = string.Format(@"select * from Tab_SAPMaterialMasterData");
DataTable SelectDt = AppUtility.Engine.Query.QueryTable(sql);
if (SelectDt.Rows.Count > 0)
{
string DeleteSql = string.Format(@"delete from Tab_SAPMaterialMasterData");
DataTable DeleteDt = AppUtility.Engine.Query.QueryTable(DeleteSql);
}
for (int j = 0; j < dataTable.Rows.Count; j++)
{
string InsertSql = string.Format(@"INSERT Tab_SAPMaterialMasterData(MATNR,MAKTX,BWKEY,VPRSV,BKLAS,MTART,MEINS,MATKL,BESKZ)
VALUES('{0}','{1}','{2}','{3}','{4}','{5}','{6}','{7}','{8}')",
dataTable.Rows[j]["MATNR"].ToString(),
dataTable.Rows[j]["MAKTX"].ToString(),
dataTable.Rows[j]["BWKEY"].ToString(),
dataTable.Rows[j]["VPRSV"].ToString(),
dataTable.Rows[j]["BKLAS"].ToString(),
dataTable.Rows[j]["MTART"].ToString(),
dataTable.Rows[j]["MEINS"].ToString(),
dataTable.Rows[j]["MATKL"].ToString(),
dataTable.Rows[j]["BESKZ"].ToString());
sb.Append(InsertSql);
}
OThinker.H3.WorkSheet.AppUtility.Engine.Query.CommandFactory.CreateCommand().ExecuteNonQuery(sb.ToString());
result = new ReturnResult(true, "SAP主資料增量同步成功！");
}
else
{
result = new ReturnResult(false, "SAP主資料增量同步失敗！");
}

return result.ToString();
}
public class Item
{
public string WERKS { get; set; }
}
/// <summary>
/// 將泛型集合類轉換成DataTable
/// </summary>
/// <typeparam name="T">集合項型別</typeparam>
/// <param name="list">集合</param>
/// <param name="propertyName">需要返回的列的列名</param>
public static DataTable ToDataTable<T>(IList<T> list, params string[] propertyName)
{
List<string> propertyNameList = new List<string>();
if (propertyName != null)
propertyNameList.AddRange(propertyName);

DataTable result = new DataTable();
if (list.Count > 0)
{
PropertyInfo[] propertys = list[0].GetType().GetProperties();
foreach (PropertyInfo pi in propertys)
{
if (propertyNameList.Count == 0)
{
result.Columns.Add(pi.Name, pi.PropertyType);
}
else
{
if (propertyNameList.Contains(pi.Name))
result.Columns.Add(pi.Name, pi.PropertyType);
}
}

for (int i = 0; i < list.Count; i++)
{
ArrayList tempList = new ArrayList();
foreach (PropertyInfo pi in propertys)
{
if (propertyNameList.Count == 0)
{
object obj = pi.GetValue(list[i], null);
tempList.Add(obj);
}
else
{
if (propertyNameList.Contains(pi.Name))
{
object obj = pi.GetValue(list[i], null);
tempList.Add(obj);
}
}
}
object[] array = tempList.ToArray();
result.LoadDataRow(array, true);
}
}
return result;
}

public class ReturnResult
{
/// <summary>
/// 訊息類建構函式
/// </summary>
/// <param name="success"></param>
/// <param name="message"></param>
public ReturnResult(bool success, string message, string instanceId)
{
this.Success = success;
this.Message = message;
}

/// <summary>
/// 訊息類建構函式
/// </summary>
/// <param name="success"></param>
/// <param name="message"></param>
public ReturnResult(bool success, string message)
: this(success, message, string.Empty)
{

}

public ReturnResult() { }

private bool success = false;
/// <summary>
/// 是否成功
/// </summary>
public bool Success
{
get { return success; }
set { success = value; }
}
private string message = string.Empty;
/// <summary>
/// 獲取或設定系統返回訊息
/// </summary>
public string Message
{
get { return message; }
set { this.message = value; }
}
}
}
}