c#分页类（转）

数据分页一直以来是比较头疼的问题，不少的分页控件也随之产生。但是我用过的几个控件，本身都要执行SQL，对存储过程支持不好，为了方便，特别写了个通用分页类,利用PagedDataSource来实现DataGrid，DataList，Repeater的分页。

完成上一页，下一页，最后一页，最前一页，总页数，当前页数，跳转这些基本的功能。

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace as.Netpager
{
///
/// .Netpager-本类提供datagrid,datalist,repeater的通用分页---jierry 04-7-19
///
public class.Netpager: System.Web.UI.Page
{
private System.Web.UI.WebControls.DataGrid datagrid=null;
private System.Web.UI.WebControls.DataList datalist=null;
private System.Web.UI.WebControls.Repeater repeater=null;
private System.Web.UI.WebControls.HyperLink lnknext;
private System.Web.UI.WebControls.HyperLink lnkprev;
private System.Web.UI.WebControls.HyperLink lnkfist;
private System.Web.UI.WebControls.HyperLink lnklast;
private System.Web.UI.WebControls.HyperLink lnkjump;
private System.Web.UI.WebControls.Label pagenum;
private System.Web.UI.WebControls.Label pagecount;
private System.Web.UI.WebControls.DropDownList list;

public.Netpager()
{
//
// TODO: 在此处添加构造函数逻辑
//
}

public System.Web.UI.WebControls.DataGrid Datagrid
{
get
{
return this.datagrid;
}
set
{
this.datagrid=value;
}
}

public System.Web.UI.WebControls.DataList Datalist
{
get
{
return this.datalist;
}
set
{
this.datalist=value;
}
}

public System.Web.UI.WebControls.Repeater Repeater
{
get
{
return this.repeater;
}
set
{
this.repeater=value;
}
}

public System.Web.UI.WebControls.HyperLink Lnkprev
{
get
{
return this.lnkprev;
}
set
{
this.lnkprev=value;
}
}

public System.Web.UI.WebControls.HyperLink Lnknext
{
get
{
return this.lnknext;
}
set
{
this.lnknext=value;
}
}

public System.Web.UI.WebControls.HyperLink Lnkfist
{
get
{
return this.lnkfist;
}
set
{
this.lnkfist=value;
}
}

public System.Web.UI.WebControls.HyperLink Lnklast
{
get
{
return this.lnklast;
}
set
{
this.lnklast=value;
}
}

public System.Web.UI.WebControls.HyperLink Lnkjump
{
get
{
return this.lnkjump;
}
set
{
this.lnkjump=value;
}
}

public System.Web.UI.WebControls.Label Pagenum
{
get
{
return this.pagenum;
}
set
{
this.pagenum=value;
}
}

public System.Web.UI.WebControls.Label Pagecount
{
get
{
return this.pagecount;
}
set
{
this.pagecount=value;
}
}

public System.Web.UI.WebControls.DropDownList List
{
get
{
return this.list;
}
set
{
this.list=value;
}
}

public void datapage(DataSet ds,int pagenum)
{
PagedDataSource objPds = new PagedDataSource();
objPds.AllowPaging =true;
//每页显示数目
objPds.PageSize =pagenum;
//指定数据源
objPds.DataSource = ds.Tables[0].DefaultView;
int CurPage;
//绑定dropdownlist数据
for(int i=1;i<=objPds.PageCount;i++)
{
this.list.Items.Add(i.ToString());
}
this.list.Items.Insert(0,new ListItem("页数",""));
//确定当前页数
if (System.Web.HttpContext.Current.Request.Params["Page"] != null)
{
CurPage=Convert.ToInt32(System.Web.HttpContext.Current.Request.Params["Page"]);

}
else
{
CurPage=1;
}

objPds.CurrentPageIndex = CurPage-1;
//显示当前页数
this.pagenum.Text="页数:"+CurPage.ToString();
//显示总共页数
this.pagecount.Text="共有"+objPds.PageCount+"页";

//下一页
if (!objPds.Is上一页：Xml实现无限级的（国家）省、市、区、县的动态关联 " href="http://www.pushad.com/Info/6489.Html">用Xml实现无限级的（国家）省、市、区、县的动态关联 )
{
lnknext.NavigateUrl=System.Web.HttpContext.Current.Request.CurrentExecutionFilePath+"?Page=" + Convert.ToString(CurPage+1);
}
//上一页
if(!objPds.IsFirstPage)
{
lnkprev.NavigateUrl=System.Web.HttpContext.Current.Request.CurrentExecutionFilePath+"?Page="+Convert.ToString(CurPage-1);
}
//第一页
if(CurPage!=1)
{
lnkfist.NavigateUrl=System.Web.HttpContext.Current.Request.CurrentExecutionFilePath+"?Page="+Convert.ToString(1);
}
//最后一页
if(CurPage!=objPds.PageCount)
{
lnklast.NavigateUrl=System.Web.HttpContext.Current.Request.CurrentExecutionFilePath+"?Page="+Convert.ToString(objPds.PageCount);
}
//绑定datagrid
if(this.datagrid!=null)
{
datagrid.DataSource=objPds;
datagrid.DataBind();
}
//绑定datalist
if(this.datalist!=null)
{
datalist.DataSource=objPds;
datalist.DataBind();
}
//绑定repeater
if(this.repeater!=null)
{
repeater.DataSource=objPds;
repeater.DataBind();
}

}

//dropdownlist选择改变
public void select()
{
this.lnkjump.NavigateUrl=System.Web.HttpContext.Current.Request.CurrentExecutionFilePath+"?Page="+Convert.ToString(this.list.SelectedItem.Value);
}

}
}

使用方法:
1.在引用里添加as.Netpager.dll的引用
2.using as.Netpager;
3.private.Netpager pager;
4.
page_load()
if(!IsPostBack)
{
pager=new.Netpager();
pager.Datagrid=this.DataGrid1;
pager.Datalist=this.DataList1;
pager.Repeater=this.Repeater1;
pager.Lnknext=this.HyperLink1;
pager.Lnkprev=this.lnkprev;
pager.Lnklast=this.lnklast;
pager.Lnkfist=this.lnkfist;
pager.Pagenum=this.Label1;
pager.Pagecount=this.Label2;
pager.List=this.DropDownList1;

DataSet ds=new DataSet();
ds.ReadXml(Server.MapPath("test.Xml"));
pager.datapage(ds,5);
}

5.private void DropDownList1_SelectedIndexChanged(object sender, System.EventArgs e)
{
pager=new.Netpager();
pager.List=this.DropDownList1;
pager.Lnkjump=this.HyperLink3;
pager.select();

}