自己用asp.net 搞的数字导航条分页

最新推荐文章于 2014-03-25 20:40:00 发布

lxy_abcde1190

最新推荐文章于 2014-03-25 20:40:00 发布

阅读量747

点赞数

CC 4.0 BY-SA版权

分类专栏： c#之分页技术文章标签： asp.net string dataset sql input table

本文链接：https://blog.youkuaiyun.com/lxy_abcde1190/article/details/2303454

c#之分页技术专栏收录该内容

14 篇文章

订阅专栏

本文介绍了一个自定义的数字导航条分页组件的实现过程。该组件使用C#和ASP.NET开发，能够根据需求调整每页显示的记录数量及导航条上的页码个数。文章详细展示了如何计算总页数、当前页等关键信息，并通过实例代码说明了如何从数据库中读取数据并进行分页展示。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

搞了一天，终于搞出属于自己的数字导航条分页类，哈哈……，通用的！！

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Text;
using apk.DatabaseEx;
using System.Data.SqlClient;

public partial class MyCeShiPage : System.Web.UI.Page
{
     protected void Page_Load(object sender, EventArgs e)
     {
         if (!IsPostBack)
         {

             if (this.Request.Params["currentPage"] == null)
             {
                 currentpage = 1;
             }
             else
             {
                 currentpage =Convert.ToInt32(Request.Params["currentPage"]);
             }
             bbb();
             //string kk = PageData();
             //Response.Write(kk);

         }
     }

     public static int pages;                //总的页数

     public static int pagecout;              //总的记录条数
     public static int   currentpage;                  //当前页

     protected string PageData()
     {

         int cout=10;                        //每页要显示的条数
         int showpage=10;                    //数字导航条要显示页码的个数
         string leftInfo;
         pagecout = CalculateRecord();
         if (pagecout % cout == 0)
         {
             pages = pagecout / cout;
         }
         else
         {
             pages = pagecout / cout + 1;

         }
         StringBuilder centerInfo = new StringBuilder();

//分页条分三部分，leftInfo是最左边的部分，用来显示当前页/总页数，每页显示的记录条数

         leftInfo = "第" + currentpage +"页"+ "/" + "共"+pages+"页" + "  " + "每页"
             + cout + "条" + "  共" + pagecout + "条";

         //中间的部分是分页部分

int min;//要显示的页面数最小值

int max;//要显示的页面数最大值

         if (currentpage > pages)//当前页必须小于最大页
         {
             currentpage = pages;
         }

if (currentpage % showpage == 0) //如果恰好整除
{

min = currentpage + 1;

             max = currentpage + showpage;
         }
         else if (currentpage % showpage == 1 && currentpage > showpage)
         {

min = (((int)currentpage / showpage) - 1) * showpage + 1;

max = currentpage - 1;

}

else
{

min = ((int)currentpage / showpage) * showpage + 1;

max = (((int)currentpage / showpage) + 1) * showpage;

}

string numberStr = " ";//循环生成数字序列部分

string AbsUrl;//（URL?）左边的部分

AbsUrl = this.Context.Request.Url.ToString();

if (AbsUrl.IndexOf("?") == -1)
{

}

else
{

AbsUrl = AbsUrl.Substring(0, AbsUrl.IndexOf("?"));

}

for (int i = min; i <= max; i++)
{

if (i <= pages)//只有不大于最大页才显示
{

if (currentpage == i)//如果是当前页，用斜体和红色显示
{

numberStr = numberStr + "<a href=" + AbsUrl + "?currentPage=" + i.ToString() + ">" + "<I style='color:red'>" + i.ToString() + "</I>" + "</a>" + "/n";

}

else
{

numberStr = numberStr + "<a href=" + AbsUrl + "?currentPage=" + i.ToString() + ">" + i.ToString() + "</a>" + "/n";

}

string First, Previous, Next, Last;

First = AbsUrl + "?currentPage=1";

/////////

if (currentpage == 1)

Previous = AbsUrl + "?currentPage=1";

else

Previous = AbsUrl + "?currentPage=" + (currentpage - 1).ToString();

/////////

if (currentpage == pages)

Next = AbsUrl + "?currentPage=" + pages;

else

Next = AbsUrl + "?currentPage=" + (currentpage + 1).ToString();
/////////

Last = AbsUrl + "?currentPage=" + pages;

centerInfo.AppendFormat("<font face='Webdings' style='font-size:14px'><a href="/{0"}>7</a><a href="/{1"}>3</a></font>{2}<font face='Webdings' style='font-size:14px'><a href="/{3"}>4</a><a href="/{4"}>8</a></font>", First, Previous, numberStr, Next, Last);

StringBuilder sb = new StringBuilder();//输出HTML字符串

sb.AppendFormat("<table style = 'font-size:12px' border='0' cellpadding='0' cellspacing='0' width='100%'> /n " +

"<tr>/n" +

"<td width='25%' align='left'>{0}</td>/n" +

"<td width='61%' align='right'>{1}</td>/n" +

"<td width='14%' align='right'><input type='text' name='T1' size='4' style='border-bottom:solid 1pt gray;border-top :solid 1pt gray; border-left:solid 1pt gray;border-right:solid 1pt gray;'> /n <input type='button' name='B1' size='6' value=go style='border-bottom:solid 1pt gray;border-top :solid 1pt gray; border-left:solid 1pt gray;border-right:solid 1pt gray;' onclick='go(T1,{2})'></td>/n" +

"</tr>/n" +

"</table>", leftInfo,

centerInfo.ToString(),

pages);

         return sb.ToString();
     }

//ICollection CreateSource()
//{

//}

     public int CalculateRecord()                 //计算总共有多少条记录
     {
         int allcout =0;
         string sql = "select count(namee) as co from product";

        SqlDataReader    rs =(SqlDataReader) DBManager.SystemDatabaseExec.ExecReader(sql);
         if (rs.Read())
         {
             allcout = Convert.ToInt32(rs["co"].ToString());
         }
         DBManager.SystemDatabaseExec.Close();
         return allcout;
     }

     private void bbb()//从数据库读出数据，绑定，在页面显示
     {
         StringBuilder sql = new StringBuilder();
         string sql1;

             sql.AppendFormat("select top {0} productid,productno,namec,namee from product where productid not in (select top {1} productid from product )", 10, (currentpage-1) * 10);
             sql1 = sql.ToString();

         DataSet ds = new DataSet();
         bool bol = DBManager.SystemDatabaseExec.ExecDataset(sql1, ds, "table");
         if (!bol)
             return;
         datalist1.DataSource = ds;
         datalist1.DataBind();
         DBManager.SystemDatabaseExec.Close();
     }
}