t.aspx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;

public partial class t : System.Web.UI.Page
{
    DBhelper db = new DBhelper();
    Common cm = new Common();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {               
            dlBind();
        }
    }
    protected void dlBind()
    {
        int curpage = Convert.ToInt32(this.labPage.Text);
        //获取数据源的数据表
        string strSql = "select * from T order by Tid DESC";
        DataTable dsTable = db.GetDataSet(strSql, "T");
        PagedDataSource ps = new PagedDataSource();
        ps.DataSource = dsTable.DefaultView;
        ps.AllowPaging = true; //是否可以分页
        ps.PageSize = 5; //显示的数量
        ps.CurrentPageIndex = curpage - 1; //取得当前页的页码
        this.upbt.Enabled = true;
        this.nextbt.Enabled = true;
        this.lastbt.Enabled = true;
        this.indexbt.Enabled = true;
        if (curpage == 1)
        {
            this.indexbt.Enabled = false;//不显示第一页按钮
            this.upbt.Enabled = false;//不显示上一页按钮
        }
        if (curpage == ps.PageCount)
        {
            this.nextbt.Enabled = false;//不显示下一页
            this.lastbt.Enabled = false;//不显示最后一页
        }
        this.countPage.Text = Convert.ToString(ps.PageCount);
        this.dtSuiyu.DataSource = ps;
        this.dtSuiyu.DataKeyField = "Tid";
        this.dtSuiyu.DataBind();
    }
    protected void indexbt_Click(object sender, EventArgs e)
    {
        this.labPage.Text = "1";
        this.dlBind();
    }
    protected void upbt_Click(object sender, EventArgs e)
    {
        this.labPage.Text = Convert.ToString(Convert.ToInt32(this.labPage.Text) - 1);
        this.dlBind();
    }