解决JSON字符长度超出限制

环境asp.net  4.0  ，AJAX 一般处理程序

碰到JSON字符长度超出限制，抛出异常，参考了网上资料和网友博客

web.config添加以下内容

<system.web.extensions>
<scripting>
<webServices>
<jsonSerialization maxJsonLength="20971520"/>
</webServices>
</scripting>
</system.web.extensions>

ashx业务文件中添加红色代码就OK

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Configuration;
using System.Web.Script.Serialization;
using MODEL;
using TOOL;
using BLL;
using System.Web.Configuration;
namespace UI.ajax.stock
{
    /// <summary>
    /// stockin 的摘要说明
    /// </summary>
    public class stockin : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            stockInBLL bll = new stockInBLL();
            List<MODEL.stockin> list = bll.getStockIn();
            //序列化
            JavaScriptSerializer jss = new JavaScriptSerializer();
             ScriptingJsonSerializationSection section = ConfigurationManager.GetSection("system.web.extensions/scripting/webServices/jsonSerialization") as ScriptingJsonSerializationSection; 27           
                if (section != null) 29  { 30                     jss.MaxJsonLength = section.MaxJsonLength; 31                     jss.RecursionLimit = section.RecursionLimit; 32  } 33             context.Response.Write(jss.Serialize(list));
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}