using System;
using System.Configuration;
using System.Data;
using System.Linq;
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;
using System.Xml.Linq;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page
{
    public int pagenum;
    public int allnum;
    protected void Page_Load(object sender, EventArgs e)
    {
        addlink(1);
        addpagenum(1);

    }
    protected void link_Command(Object sender, CommandEventArgs e)
    {
        Response.Redirect("contents.aspx?SearchExpression=" + e.CommandName, true);
    }
    protected void addlink(int i)
    {
        sql newssqlconn = new sql();
        SqlDataReader reader = newssqlconn.connop(newssqlconn.showstr);
        int num = 0;
        while (reader.Read())
        {           
            num++;
            if (num >= (i * 5 - 4)&& num <= (i * 5))
            {
                LinkButton link = new LinkButton();
                Label lable = new Label();

                link.Text = reader["title"].ToString();
                lable.Text = "<br/>" + " &nbsp;&nbsp;&nbsp;&nbsp;" + reader["datetime"].ToString() + "<br/>";

                this.Panel1.Controls.AddAt(0, link);
                
                this.Panel1.Controls.AddAt(1, lable);

                link.CommandName = reader["id"].ToString();

                link.Command += new CommandEventHandler(this.link_Command);
            }
        }
        allnum = num;
        newssqlconn.sqlclose();
    }
    protected void addpagenum(int pagenum)
    {
        int j=1;
        while(j<=(allnum/5+1))
        {
            if (j == pagenum)
            {
                Label lab = new Label();
                lab.Text = j.ToString();
                this.Panel2.Controls.Add(lab);
            }
            else
            {
                LinkButton lin = new LinkButton();
                lin.Text = j.ToString();
                lin.CommandName = j.ToString();
                this.Panel2.Controls.Add(lin);
                lin.Command += new CommandEventHandler(lin_Command);
            }
            j++;
        }
        
    }
[color=FF0000]此处根据数据库内数据每五行数据添加一个页面,运行后,第一次点击选择第二页可以运行,但第二次点击第三页却回到第一页了,再点击第三页才会实现,等于每两次点击才会实现一次。[/color]

    void lin_Command(object sender, CommandEventArgs e)
    {
         int j = Convert.ToInt32(e.CommandName);
        this.Panel1.Controls.Clear();
        this.Panel2.Controls.Clear();
        addlink(j);
        addpagenum(j);
    }
}


我把我的源代码给大家看看吧,数据库直接附加就可以了,在代码里改下登录密码就行了。