[WebMethod(Description = "将一个DataTable对象转化成JSON")]

     public string GetJSON()

     {

         JavaScriptSerializer jss = new JavaScriptSerializer();

         DataTable table = new DataTable("wangzhen");

         table.Columns.Add("Name");

         table.Columns.Add("Sex");

         table.Rows.Add(new object[] { "张三", "male" });

         table.Rows.Add(new object[] { "李四", "male" });

         table.Rows.Add(new object[] { "王五", "male" });

         List<Person> list = new List<Person>();

         Person person = null;

         for (int i = ; i < table.Rows.Count; i++)

         {

             person = new Person();

             person.Name = table.Rows[i]["Name"].ToString();

             person.Sex = table.Rows[i]["Sex"].ToString();

             list.Add(person);

         }

         return jss.Serialize(list);

     }