C#中将dataTable转换为json格式的函数,该怎么解决

C#中将dataTable转换为json格式的函数
请高手指教C#是否有现成的将dataTable转换为json格式的函数,请知道者尽快答复，很急谢谢！

[解决办法]

C# code

        /// <summary>        /// 将datatable转换为json          /// </summary>        /// <param name="dtb">Dt</param>        /// <returns>JSON字符串</returns>        private string Dtb2Json(DataTable dtb)        {            JavaScriptSerializer jss = new JavaScriptSerializer();            System.Collections.ArrayList dic = new System.Collections.ArrayList();            foreach (DataRow dr in dtb.Rows)            {                System.Collections.Generic.Dictionary<string, object> drow = new System.Collections.Generic.Dictionary<string, object>();                foreach (DataColumn dc in dtb.Columns)                {                    drow.Add(dc.ColumnName, dr[dc.ColumnName]);                }                dic.Add(drow);            }            //序列化              return jss.Serialize(dic);        }
[解决办法]
public class JsonHelper
   {
       /// <summary>
       /// 生成Json格式
       /// </summary>
       /// <typeparam name="T"></typeparam>
       /// <param name="obj"></param>
       /// <returns></returns>
       public static string GetJson<T>(T obj)
       {
           DataContractJsonSerializer json = new DataContractJsonSerializer(obj.GetType());
           using (MemoryStream stream = new MemoryStream())
           {
               json.WriteObject(stream, obj);
               string szJson = Encoding.UTF8.GetString(stream.ToArray());
               return szJson;
           }
       }
       /// <summary>
       /// 获取Json的Model
       /// </summary>
       /// <typeparam name="T"></typeparam>
       /// <param name="szJson"></param>
       /// <returns></returns>
       public static T ParseFromJson<T>(string szJson)
       {
           T obj = Activator.CreateInstance<T>();
           using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(szJson)))
           {
               DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType());
               return (T)serializer.ReadObject(ms);
           }
       }

[解决办法]
GetJson 将传入 类对象转化成字符串
ParseFromJson 将 josn字符串转化 成 对象