guestbook.aspx.cs

ajax 三层软件开发实例,三层软件开发实例

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.Data.OleDb;

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

    //protected void GridView1_DataBound(object sender, EventArgs e)
    //{
    //    this.lblCurrent.Text = Convert .ToString(this.GridView1.PageIndex + 1);
    //    this.lblTotalNum.Text = this.GridView1.PageCount.ToString();
    //}

    protected void page()
    {
        PagedDataSource pds=new PagedDataSource ();
        pds.DataSource = (new InterGuestbook()).getListGuestBook();
        pds.AllowPaging = true;
        pds.PageSize = 3;
        lblTotalNum.Text = pds.PageCount.ToString();
        pds.CurrentPageIndex = int.Parse (lblCurrent .Text)-1 ;


        if (pds.IsFirstPage)
        {
            ibtnPrev.Visible = false ;
            ibtnNext.Visible = true;
        }

        if (pds.IsLastPage)
        {
            ibtnNext.Visible = false;
            ibtnPrev.Visible = true;
        }

        if (!pds.IsLastPage && !pds.IsFirstPage)
        {
            ibtnNext.Visible = true;
            ibtnPrev.Visible = true;
        }
        this.dlLy.DataSource = pds;
        this.dlLy.DataBind();

    }
    protected void ibtnNext_Click(object sender, ImageClickEventArgs e)
    {
        lblCurrent.Text = Convert.ToString(int.Parse(lblCurrent.Text) + 1);
        page();
    }
    protected void ibtnPrev_Click(object sender, ImageClickEventArgs e)
    {
        lblCurrent.Text = Convert.ToString(int.Parse(lblCurrent.Text) - 1);
        page();
    }
    protected void btnSend_Click(object sender, EventArgs e)
    {
        System.Threading.Thread.Sleep(2000);
    }
}