仿GOOGLE分页

效果:

共1页       首页 上一页  1 2 3 4 5 6 7 8 9 10 ....下一页 末页

调用页面(Aspx):

在要显示分页导航的地方加个DIV标签:

调用页的代码(CS):

DataSet ds = db.getDs(sql);
this.PageInfo.InnerHtml = PageNums.GetPageNum(ds,DataList1,12); //传入DataSet,DataList名称和分页大小

PageNums实现分页类(PageNums.cs):

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;

///


///PageNums 的摘要说明
///

public class PageNums
{
    ///
    /// DataSet实例
    /// DataList名称
    /// 分页大小

    public static string GetPageNum(DataSet ds, DataList datalistname, int pagesize)
    {
        PagedDataSource objPds = new PagedDataSource();
        objPds.DataSource = ds.Tables[0].DefaultView;
        objPds.AllowPaging = true;
        int total = ds.Tables[0].Rows.Count;
        objPds.PageSize = pagesize;
        int page;
        if (HttpContext.Current.Request.QueryString["page"] != null)
            page = Convert.ToInt32(HttpContext.Current.Request.QueryString["page"]);
        else
            page = 1;
        objPds.CurrentPageIndex = page - 1;
        datalistname.DataSource = objPds;
        datalistname.DataBind();
        int allpage = 0;
        int next = 0;
        int pre = 0;
        int startcount = 0;
        int endcount = 0;
        string pagestr = "";

        if (page < 1) { page = 1; }
        //计算总页数
        if (pagesize != 0)
        {
            allpage = (total / pagesize);
            allpage = ((total % pagesize) != 0 ? allpage + 1 : allpage);
            allpage = (allpage == 0 ? 1 : allpage);
        }
        next = page + 1;
        pre = page - 1;
        startcount = (page + 5) > allpage ? allpage - 9 : page - 4;//中间页起始序号
        //中间页终止序号
        endcount = page < 5 ? 10 : page + 5;
        if (startcount < 1) { startcount = 1; } //为了避免输出的时候产生负数,设置如果小于1就从序号1开始
        if (allpage < endcount) { endcount = allpage; } //页码+5的可能性就会产生最终输出序号大于总页码,那么就要将其控制在页码数之内
        pagestr = "共" + allpage + "页      ";

        pagestr += page > 1 ? "首页  上一页" : "首页 上一页";
       //中间页处理,这个增加时间复杂度,减小空间复杂度
        for (int i = startcount; i <= endcount; i++)
        {
            pagestr += page == i ? "  " + i + "" : "  " + i + "";
        }
        pagestr += page != allpage ? "  下一页  末页" : " 下一页 末页";

        return pagestr;

    }
}

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