第一种：前台接收

dataType: "json",
 success: function (data)
 {
	var varReceiver = data;
 }

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="echart2.aspx.cs" Inherits="RTC.echart2" %>






  
  
  
  
  

第二种：前台接收

dataType: "text",
        success: function (data) {
          //var varReceiver = data;
          var varReceiver = jQuery.parseJSON(data);
。。。。。
}

两者统一的后台 一般处理程序ashx：

using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Web;

namespace RTC
{
  /// 

  /// getrtchistorydata 的摘要说明
  /// 
  public class getrtchistorydata : IHttpHandler
  {
    public void ProcessRequest(HttpContext context)
    {
      context.Response.ContentType = "text/plain";

      string strRTCNo = context.Request.QueryString["rtcno"].ToString();

      SqlConnection con = new SqlConnection("server=192.168.0.222;uid=sa;pwd=hiwits;database=CeShi_QingDao;Max Pool Size=2048;");
      SqlCommand cmd = new SqlCommand("select RtcNO,RoomTemp,InstallPlace,convert(varchar,RecordTime,120) as RecordTime,systime from RTCHistory where RtcNO='" + strRTCNo + "' order by InstallPlace,RecordTime", con);
      SqlDataAdapter da = new SqlDataAdapter(cmd);
      DataSet ds = new DataSet();
      da.Fill(ds);

      string stbList = "";
      stbList = "{\"Rows\":[";
      foreach (DataRow dr in ds.Tables[0].Rows)
      {
        stbList = stbList + "{ \"RecordTime\":\"" + dr[3].ToString() + "\",";
        stbList = stbList + " \"RoomTemp\":\"" + dr[1].ToString() + "\"},";
      }
      stbList = stbList.Substring(0, stbList.Length - 1);//去掉最后的一个逗号

      

      stbList = stbList + "],"; 
      stbList = stbList + "\"Count\":[{\"total\":" + ds.Tables[0].Rows .Count+ "}]";//用来记录一共返回了几条数据记录
      
      stbList = stbList + "}";

      context.Response.Write(stbList.ToString());
    }

    public bool IsReusable
    {
      get
      {
        return false;
      }
    }

    public void RetrunHistoryData()
    {


    }
  }
}