前台发送字符串给后台，格式为（a,b,c,d），后台将字符串转换成数组遍历后进而更新CheckId

 using Newtonsoft.Json;
 using System;
 using System.Collections.Generic;
 using System.Configuration;
 using System.Data;
 using System.Linq;
 using System.Web;
 using System.Web.UI;
 using System.Web.UI.WebControls;
 using TL.Common.Util;

 namespace S_manager
 {
     public partial class S_GetCheckMater : System.Web.UI.Page
     {
         protected void Page_Load(object sender, EventArgs e)
         {
             string matterId = Request.Params["matterid"];
             char[] chs = { ',' };
             try
             {
                 string[] str = matterId.Split(chs, StringSplitOptions.RemoveEmptyEntries);
                 string strcnn = ConfigurationManager.ConnectionStrings["conn"].ToString();
                 SQLHelper sqlHelper = new SQLHelper(strcnn);
                 for (int i = ; i < str.Length; i++)
                 {

                         //更新数据库的CheckId
                         string sql = "update growup.dbo.S_Matter set CheckId='1' where S_MatterId ='" + str[i] + "'";
                         DataSet ds_result = sqlHelper.QueryByCmd(sql);
                         //格式化查询结果
                         string json = JsonConvert.SerializeObject(ds_result);
                         //返回给前端
                         Response.Write(json);
                 }
             }
             catch { }

         }
     }
 }