用PagedDataSource给DataList分页

最新推荐文章于 2016-10-20 16:00:08 发布

原创最新推荐文章于 2016-10-20 16:00:08 发布 · 537 阅读

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#object #system #class

本文介绍了一种使用 ASP.NET 实现分页的方法。通过 C# 代码从数据库中获取数据并将其显示在网页上，同时实现了翻页功能。具体包括初始化页面、填充数据、设置分页大小等功能。

哎~ 好象很长时间没写了,坚持不下来哦....呵呵,今天没事又看看了分页的内容,贴出代码.....

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.SqlClient;

public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            bind();
        }
    }

    public void bind()
    {

        SqlConnection con = dbcon.bind();
        SqlDataAdapter sdr = new SqlDataAdapter("select * from test1", con);
        DataTable dt = new DataTable();
        sdr.Fill(dt);
        PagedDataSource pds = new PagedDataSource();
        pds.DataSource = dt.DefaultView;
        pds.AllowPaging = true;
        pds.PageSize = 2;
        pds.CurrentPageIndex =Convert.ToInt32(Convert.ToInt32( la_page.Text)-1);
        DataList1.DataSource = pds;
        DataList1.DataBind();
        ibt_next.Visible = true;
        ibt_pre.Visible = true;
        ibt_last.Visible = true;
        ibt_next.Visible = true;
        ibt_first.Visible = true;
        if (pds.IsFirstPage)
        {
            ibt_pre.Visible= false;
            ibt_first.Visible = false;
        }

        if (pds.IsLastPage)
        {
            ibt_last.Visible = false;
            ibt_next.Visible = false;
        }

        if (!IsPostBack)
        {
            for (int i = 1; i <= pds.PageCount; i++)
            {
                DropDownList1.Items.Add(i.ToString());
            }
        }

    }
    protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
    {
        la_page.Text = DropDownList1.SelectedValue.ToString();
        bind();

    }
    protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
    {
        la_page.Text = Convert.ToString(Convert.ToInt32(la_page.Text) + 1);
        DropDownList1.SelectedValue = la_page.Text;
        bind();
    }
    protected void ImageButton2_Click(object sender, ImageClickEventArgs e)
    {
        la_page.Text = Convert.ToString(Convert.ToInt32(la_page.Text) - 1);
        DropDownList1.SelectedValue = la_page.Text;
        bind();
    }
    protected void ibt_last_Click(object sender, ImageClickEventArgs e)
    {
        la_page.Text = DropDownList1.Items.Count.ToString();
        DropDownList1.SelectedValue = la_page.Text;
        bind();

    }
    protected void ibt_first_Click(object sender, ImageClickEventArgs e)
    {
        la_page.Text = "1";
        DropDownList1.SelectedValue = "1";
        bind();
    }
}