ASP.NET GridView,DataList,Repeater的通用分页

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

namespace ustonetdonet.DotNetPagedData
{
    /**////  <summary>
    ///  本类提供GridView,DataList,Repeater的通用分页
    ///  参考了NetFire(Fire.Rolland.Han)http://netfire.my.gsdn.net/2005/04/04/2945/
    ///  
    ///  
    ///     使用方法：
    ///     1.在引用里添加dll的引用
    ///  2.using ustonetdonet.DotNetPagedData;
    ///  3.private DotNetPagedData pager;
    ///  4.page_load()
    ///  if(!IsPostBack)   
    ///  {    
    ///     pager=new DotNetPagedData();
    ///     pager.PagedPanel=this.pagedPanel;    
    ///     pager.GridView = this.GridView1;  //如果是DataGrid则添加此项
    ///     pager.Datalist=this.DataList1;    //如果是DataList则添加此项  
    ///     pager.Repeater=this.Repeater1;    //如果是Repeater则添加此项  
    ///     pager.Lnknext=this.lnkNext;    
    ///        pager.Lnkprev=this.lnkPrev;    
    ///        pager.Lnklast=this.lnklast;    
    ///        pager.Lnkfist=this.lnkfist;    
    ///        pager.Pagenum=this.Pagenum;    
    ///        pager.Pagecount=this.Pagecount;    
    ///        pager.List=this.ddl_jump; 
    ///        //简单示例定义DataSet外部定义，同样也可以采用执行sqlstr，并填充给DataSet，本类也重载了datapage()，详细信息可查看详细代码       
    ///     DataSet ds=new DataSet();    
    ///     ds.ReadXml(Server.MapPath("test.xml"));    
    ///     pager.datapage(ds,5);   
    ///  }  
    ///  
    ///  // DropDownList必须设定为AutoPostBack，下面添加它的事件
    ///  5.private void DropDownList1_SelectedIndexChanged(object sender, System.EventArgs e)  
    ///  {      
    ///     pager=new DotNetPagedData();   
    ///     pager.List=this.DropDownList1;   
    ///     pager.Lnkjump=this.HyperLink3;   
    ///     pager.select();              
    ///  }
    ///  </summary>


    public class DotNetPagedData : System.Web.UI.Page
    {
        private System.Web.UI.WebControls.GridView gridview = 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.Panel pagedPanel;
        private System.Web.UI.WebControls.DropDownList list;

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

        public System.Web.UI.WebControls.GridView GridView
        {
            get
            {
                return this.gridview;
            }
            set
            {
                this.gridview = 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 System.Web.UI.WebControls.Panel PagedPanel
        {
            get
            {
                return this.pagedPanel;
            }
            set
            {
                this.pagedPanel = value;
            }
        }

        //针对一般数据邦定，不执行sqlstr
        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;
            if (objPds.PageCount > 1)
            {
                pagedPanel.Visible = true;
            }
            else
            {
                pagedPanel.Visible = false;
            }
            //显示当前页数   
            this.pagenum.Text = "当前：" + CurPage.ToString() + "页";
            //显示总共页数   
            this.pagecount.Text = "共有" + objPds.PageCount + "页";
            //下一页   
            if (!objPds.IsLastPage)
            {
                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gridview   
            if (this.gridview != null)
            {
                gridview.DataSource = objPds;
                gridview.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();
            }
        }

        //重载，针对执行sqlstr
        public void datapage(string sqlcon, string sqlstr, int pagenum)
        {
            SqlConnection objConn = new SqlConnection(sqlcon);
            SqlDataAdapter objCommand = new SqlDataAdapter(sqlstr, objConn);
            DataSet ds = new DataSet();
            objCommand.Fill(ds);
            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;
            if (objPds.PageCount > 1)
            {
                pagedPanel.Visible = true;
            }
            else
            {
                pagedPanel.Visible = false;
            }
            //显示当前页数   
            this.pagenum.Text = "当前:" + "第" + CurPage.ToString() + "页";
            //显示总共页数   
            this.pagecount.Text = "共有" + objPds.PageCount + "页";
            //下一页   
            if (!objPds.IsLastPage)
            {
                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gridview   
            if (this.gridview != null)
            {
                gridview.DataSource = objPds;
                gridview.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);
        }

    }
}