asp.net分页asp.net无刷新分页高效率分页

   项目中经常会用到分页的功能类似的项目做过无数个了，今个把自己常用的分页代码分享一下。

首先说说服务端处理的代码：

下面代码中重点是分页的sql语句的写法，其中的参数@n是当前的页码，总的来说本服务端主要向前台输出了2个值，接收了一个参数（当前页码），输出的是总的页数和当前页码下的数据。

sql = "select t.* from (select *,ROW_NUMBER() over(order by id asc) rownum from eazy_yiliaofuwu where typeid='"+id+"')t where t.rownum>=(@n-1)*10+1 and t.rownum<=@n*10";
DataTable dt = DbHelperSQL.Query(sql, new SqlParameter("@n", pagenum)).Tables[0];

namespace EazyCMS.Web.tools
{
    /// <summary>
    /// getyaopinfuwu 的摘要说明
    /// </summary>
    public class getyaopinfuwu : IHttpHandler
    {
        private string sql = string.Empty;      
     
        private int total = 0;

        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            string id = context.Request["id"];
            int pagenum = Convert.ToInt32(context.Request["pagenum"]);

            sql = "select t.* from (select *,ROW_NUMBER() over(order by id asc) rownum from eazy_yiliaofuwu where typeid='"+id+"')t where t.rownum>=(@n-1)*10+1 and t.rownum<=@n*10";
            DataTable dt = DbHelperSQL.Query(sql, new SqlParameter("@n", pagenum)).Tables[0];
            //这里得到的根据条件查询得到的数据总的条数
            total = Convert.ToInt32(DbHelperSQL.GetSingle("select COUNT(*) from eazy_yiliaofuwu where typeid=" + id));
            Medicalitems medicalitems = new Medicalitems();
            medicalitems.medicalitem = new Medicalitem[dt.Rows.Count];
            medicalitems.PageCount = (int)Math.Ceiling(total / 10.0);//总的页码0.1→1 ， 0.95→1， 1.01→2，1.0→1
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                medicalitems.medicalitem[i] = new Medicalitem() { MedicalCode=dt.Rows[i]["ylcode"].ToString(), MedicalContent=dt.Rows[i]["itemcontent"].ToString(), MedicalName=dt.Rows[i]["itemname"].ToString(), MedicalPrice=dt.Rows[i]["price"].ToString(), MedicalUnit=dt.Rows[i]["danwei"].ToString() };
            }
            context.Response.Write(new JavaScriptSerializer().Serialize(medicalitems));

        }
    
       
       
        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
    class Medicalitems
    {
        public Medicalitem[] medicalitem { get; set; }
        public int PageCount { get; set; }

    }
    class Medicalitem
    {
        public string MedicalCode { get; set; }
        public string MedicalName { get; set; }
        public string MedicalContent { get; set; }
        public string MedicalUnit { get; set; }
        public string MedicalPrice { get; set; }

    }
}

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