asp.net 使用querystring实现数据库多条数据的分页

1、在page_load中插入以下代码。

        protected void Page_Load(object sender, EventArgs e)
        {
            if (Request.Params["page"] != null && Request.Params["page"].Trim() != "")
            {
                page = (Convert.ToInt32(Request.Params["page"]));
                maxpage = Databind(page, maxnum);
                lblMaxnum.Text = maxpage.ToString();
            }
            else
            {
                page = 1;
                maxpage = Databind(page, maxnum);
                lblMaxnum.Text = maxpage.ToString();
            }
        }

2、Databind方法代码如下。pagenum表示第几页，maxnum表示每页数据最多几条。

        public int Databind(int pagenum,int maxnum)
        {
            zygzsDataClassesDataContext context = new zygzsDataClassesDataContext();
            var count = context.T_Paper.Count();
            int maxpage = (count / maxnum) + 1;
            if (maxpage >= 2)
            {
                var res = context.T_Paper.Skip((pagenum - 1) * maxnum).Take(maxnum);
                rptList.DataSource = res;
                rptList.DataBind();

            }
            else
            {
                var res = context.T_Paper.Take(maxnum);
                rptList.DataSource = res;
                rptList.DataBind();
            }
            return maxpage;

        }

3、下一页按钮，代码如下。

        protected void lbtnNext_Click(object sender, EventArgs e)
        {
            if (page < maxpage)
            {
                if (Request.Params["page"] != null && Request.Params["page"].Trim() != "")
                {
                    page = (Convert.ToInt32(Request.Params["page"])) + 1;
                    Response.Redirect("Paper.aspx?page=" + page.ToString());
                }
                else
                {
                    page = 2;
                    Response.Redirect("Paper.aspx?page=" + page.ToString());
                }
            }

        }