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【Asp.Net】 asp.net数字分页效果

作者:Dezai.CN / 发布于2013/4/22/ 635


	<div id="PageInfo" runat="server" class="Blue_Font12"><!--放在页面的DIV标签-->

	

	<!--放在后台的绑定数据代码-->

	DataSet ds = new NewsFacade().GetAllData();
	 InfoList.DataSource = ds.Tables[0].DefaultView;
	 InfoList.DataBind();
	 this.PageInfo.InnerHtml = PageNums.GetPageNum(ds, InfoList, 12); //传入DataSet,DataList名称和分页大小

	<!--分页类的开始代码-->

	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;
	/// <summary>
	///PageNums 的摘要说明
	/// </summary>
	public class PageNums
	{
	 /// </summary>
	 /// <param name="ds">DataSet实例</param>
	 /// <param name="datalistname">DataList名称</param>
	 /// <param name="pagesize">分页大小</param>
	 public static string GetPageNum(DataSet ds, Repeater 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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;";
	 pagestr += page > 1 ? "<a href=/"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=1/">首页</a>&nbsp;&nbsp;<a href=/"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + pre + "/">上一页</a>" : "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 ? "&nbsp;&nbsp;<font color=/"#ff0000/">" + i + "</font>" : "&nbsp;&nbsp;<a href=/"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + i + "/">" + i + "</a>";
	 }
	 pagestr += page != allpage ? "&nbsp;&nbsp;<a href=/"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + next + "/">下一页</a>&nbsp;&nbsp;<a href=/"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + allpage + "/">末页</a>" : " 下一页 末页";
	 return pagestr;
	 }
	}

	<!--分页类的结束代码-->

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