index.aspx.cs

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using System;
using System.Data;
using System.Configuration;
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.Data.SqlClient;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["Admin"] == null)
        {
            this.PopupWin1.Message = "欢迎游客的访问,你可以在线发帖！你的IP是："+Request.UserHostAddress;
        }
        else
        {
            this.PopupWin1.Message = "欢迎管理员" + Session["Admin"] + "登陆,你可以管理帖子! 你的IP是："+Request.UserHostAddress;
        }
        if (!Page.IsPostBack)
        {
            this.DandData();     //绑定数据
        }
    }

    //为下拉列表添加选择项
    private void getListItem()
    {
        for (int i = 0; i < Convert.ToInt32(DB.Num); i++)
        {
            this.DropDownList1.Items.Add(Convert.ToString(Convert.ToInt32(i) + 1));
        }
    }

    private void DandData()
    {
        this.DropDownList1.Items.Clear();
        this.getListItem();   //向下拉列表中添加分页数

        int currPage = Convert.ToInt32(this.Label1.Text);

        SqlConnection conn = DB.getConnection();
        SqlDataAdapter da = new SqlDataAdapter();
        da.SelectCommand = new SqlCommand("select * from guestInfo order by ID desc", conn);
        DataSet ds = new DataSet();
        da.Fill(ds, "guestInfo");
        
        PagedDataSource pds = new PagedDataSource(); //对用于分页的类的引用
        pds.DataSource = ds.Tables["guestInfo"].DefaultView;//设置数据源(DataSet类型)
        pds.AllowPaging = true;

        pds.PageSize = 3;   //指定每页显示几条记录
        pds.CurrentPageIndex = currPage - 1;    //获取当前页索引后转到索引页
        
        if (currPage == 1)
        {