效果:
調用頁面(Aspx):
在要顯示分頁導航的地方加個DIV標籤:<div id="PageInfo" runat="server" class="Blue_Font12"></div>
調用頁的代碼(CS):
DataSet ds = db.getDs(sql);
this.PageInfo.InnerHtml = PageNums.GetPageNum(ds,DataList1,12); //傳入DataSet,DataList名稱和分頁大小
PageNums實現分頁類(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;
/// <summary>
///PageNums 的摘要說明
/// </summary>
public class PageNums
{
/// </summary>
/// <param name="ds">DataSet實例</param>
/// <param name="datalistname">DataList名稱</param>
/// <param name="pagesize">分頁大小</param>
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; }
//計算總頁數
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;//中間頁起始序號
//中間頁終止序號
endcount = page < 5 ? 10 : page + 5;
if (startcount < 1) { startcount = 1; } //爲了避免輸出的時候產生負數,設置如果小於1就從序號1開始
if (allpage < endcount) { endcount = allpage; } //頁碼+5的可能性就會產生最終輸出序號大於總頁碼,那麼就要將其控制在頁碼數之內
pagestr = "共" + allpage + "頁 ";
pagestr += page > 1 ? "<a href=/"" +
HttpContext.Current.Request.CurrentExecutionFilePath +
"?page=1/">首頁</a> <a href=/"" +
HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + pre +
"/">上一頁</a>" : "首頁 上一頁";
//中間頁處理,這個增加時間複雜度,減小空間複雜度
for (int i = startcount; i <= endcount; i++)
{
pagestr += page == i ? " <font
color=/"#ff0000/">" + i + "</font>" :
" <a href=/"" +
HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + i +
"/">" + i + "</a>";
}
pagestr += page != allpage ? " <a
href=/"" + HttpContext.Current.Request.CurrentExecutionFilePath +
"?page=" + next + "/">下一頁</a> <a
href=/"" + HttpContext.Current.Request.CurrentExecutionFilePath +
"?page=" + allpage + "/">末頁</a>" : " 下一頁 末頁";
return pagestr;
}
}