深入DataList分页技术之使用PagedDataSource篇
这次使用PagedDataSource
类来实现DataList
分页技术，因为这个类封装了DataGird
的分页属性,
我们来使用它来实现分页，我在这里做到了，第一页，上一页，下一页，最后一页，跳转到第几页这几个功能。这些功能应该都比较实用。希望对大家有所用，给大家看代码吧。
using
System;
using
System.Collections;
using
System.ComponentModel;
using
System.Data;
using
System.Drawing;
using
System.Web;
using
System.Web.SessionState;
using
System.Web.UI;
using
System.Web.UI.WebControls;
using
System.Web.UI.HtmlControls;
using
System.Data.SqlClient;
namespace
DataListTest1
{
///<summary>
/// WebForm1
的摘要说明。
///</summary>
public class WebForm1 : System.Web.UI.Page
{
protected System.Web.UI.WebControls.DataList DataList1;
protected System.Web.UI.WebControls.HyperLink HlkFirst;
protected System.Web.UI.WebControls.HyperLink HlkPrevious;
protected System.Web.UI.WebControls.HyperLink HlkNext;
protected System.Web.UI.WebControls.HyperLink HlkLast;
protected System.Web.UI.WebControls.Label LblTotalRecord;
protected System.Web.UI.WebControls.Label LblTotalPages;
protected System.Web.UI.WebControls.Label LblCurrent;
protected System.Web.UI.WebControls.LinkButton LinkButton1;
protected System.Web.UI.WebControls.TextBox TbPageIndex;
private void Page_Load(object sender, System.EventArgs e)
{
//
在此处放置用户代码以初始化页面
if(!this.IsPostBack)
{
this.bindtoGL();
}
}
//
绑定数据到DataList
private void bindtoGL()
{
SqlConnectioncon=new SqlConnection("server=.;database=Northwind;uid=sa;pwd=");
con.Open();
SqlDataAdapter sda=new SqlDataAdapter();
sda.SelectCommand=new SqlCommand("select * from Orders",con);
DataSet ds=new DataSet();
sda.Fill(ds,"orders");
PagedDataSource pds=new PagedDataSource();
pds.DataSource=ds.Tables["orders"].DefaultView;
pds.AllowPaging=true;
pds.PageSize=12;
intCurrentPage;
if(Request.QueryString["pageIndex"]!=null)
{
CurrentPage=Convert.ToInt32(Request.QueryString["pageIndex"]);
}
else
{
CurrentPage=1;
}
pds.CurrentPageIndex=CurrentPage-1;//CurrentPageIndex
是从0页开始的所以要减1
this.LblCurrent.Text=CurrentPage.ToString();//
显示是从第1页开始
//
上一页导航
if(!pds.IsFirstPage)
this.HlkPrevious.NavigateUrl=Request.CurrentExecutionFilePath+"?pageIndex="+Convert.ToString(CurrentPage-1);
//
下一页导航
if(!pds.IsLastPage)
this.HlkNext.NavigateUrl=Request.CurrentExecutionFilePath+"?pageIndex="+Convert.ToString(CurrentPage+1);
//
第一页导航
this.HlkFirst.NavigateUrl=Request.CurrentExecutionFilePath+"?pageIndex="+1;
//
最后一页导航
this.HlkLast.NavigateUrl=Request.CurrentExecutionFilePath+"?pageIndex="+pds.PageCount;
this.DataList1.DataSource=pds;
this.DataList1.DataBind();
}
//
这个是最后一页的按钮点击事件
private void LinkButton1_Click(object sender, System.EventArgs e)
{
SqlConnectioncon=new SqlConnection("server=.;database=Northwind;uid=sa;pwd=");
con.Open();
SqlDataAdapter sda=new SqlDataAdapter();
sda.SelectCommand=new SqlCommand("select * from Orders",con);
DataSet ds=new DataSet();
sda.Fill(ds,"orders");
PagedDataSource pds=new PagedDataSource();
pds.DataSource=ds.Tables["orders"].DefaultView;
pds.AllowPaging=true;
pds.PageSize=12;
if(this.TbPageIndex.Text.ToString()==""||Convert.ToInt32(this.TbPageIndex.Text.Trim())>=pds.PageCount)
{
Response.Write("
输入不能为空，或则数字不能超过总页数！");
}
else
{
pds.CurrentPageIndex=Convert.ToInt32(this.TbPageIndex.Text.Trim())-1;
}
this.LblCurrent.Text=this.TbPageIndex.Text;
this.DataList1.DataSource=pds;
this.DataList1.DataBind();
}
}
}