一个简单的分页控件

using System;
using System.Web;
using System.Web.UI.WebControls;
using System.Text;
using System.Drawing;
using System.Web.UI.HtmlControls;
using System.Web.UI;
using System.ComponentModel;

namespace KuKu
{
    /**//// <summary>
    /// Summary description for KuKuPager.
    /// </summary>
    public class KuKuPager:WebControl
    {

        //背景图片
        string _backGroud;        
        //页查询参数
        string _pageQurey;
        //首页编号
        int _firstPage=1;
        //总共的记录数目
        int _totalRecord;
        //页面大小
        int _pageSize;    
        int _pageIndex;
        int _totalPage;

        public KuKuPager()
        {
                           
                        
        }

        protected override void OnLoad(EventArgs e)
        {

            _pageIndex=_firstPage;
            if(HttpContext.Current.Request.QueryString[_pageQurey]!=null)
            {
                _pageIndex= Convert.ToInt32(HttpContext.Current.Request.QueryString[_pageQurey]);
            }            
            if(_pageSize!=0)
            {
                if(_totalRecord%_pageSize==0)
                {
                    _totalPage= _totalRecord/_pageSize;
                }
                else
                {
                    _totalPage= _totalRecord/_pageSize+1;
                }
            }
            
        }


        protected override void Render(HtmlTextWriter writer)
        {
            string first    = "<font face='webdings'>9</font>";
            string previous= "<font face='webdings'>7</font>";
            string next    = "<font face='webdings'>8</font>";
            string last    = "<font face='webdings'>:</font>";
            StringBuilder sb =new StringBuilder();
            sb.Append("<div style='float:left'>");            
            sb.Append("<font class='t3' style='font-family:Courier New;font-size:12px'>");
            if(PageIndex==1)
            {
                sb.Append(first + " " + previous + " <b>");
            }
            else
            {
                sb.Append("<a href='"+BuildNewPageUrl(this.FirstPageNum)+"'>" + first + "</a> ");
                sb.Append("<a href='" + BuildNewPageUrl(this.PageIndex-1)+ "'>" + previous + "</a> <b>");
            }
            int j=1;
            if(PageIndex-5>=1)
            {
                j=PageIndex-5;
            }
            int k=TotalPage;
            if(PageIndex+5<=TotalPage)
            {
                k=PageIndex+5;
            }
            if(j>1)
            {
                sb.Append(" <a href='" +BuildNewPageUrl(this.FirstPageNum)+"'>1</a>  ");
            }
            for(int i=j;i<k+1;i++)
            {
                if(PageIndex==i)
                {
                    sb.Append("<span class='t2'>" + i + "</span> ");
                }
                else
                {
                    sb.Append("<a href='" +BuildNewPageUrl(i-this.FirstPageNum+1)+"'>" + i + "</a> ");
                }                
            }
            if(TotalPage>k)
            {
                sb.Append("  <a href='" + BuildNewPageUrl(this.TotalPage)+"'>" + TotalPage + "</a> ");
            }
            if(PageIndex==TotalPage)
            {
                sb.Append("</b>" + next + " " + last);
            }
            else
            {
                sb.Append("</b><a href='" +BuildNewPageUrl(this.PageIndex+1)+"'>" + next + "</a> ");
                sb.Append("<a href='" + BuildNewPageUrl(this.TotalPage)+"'>" + last + "</a>");
            }
            sb.Append("</font></div>");
            
            sb.Append("<div style='float:right'>");
            sb.Append("[总记录数:<span class='pagerRight'>" + TotalRecord + "</span>]");
            sb.Append("[每页:<span class='pagerRight'>" + PageSize + "</span>]");
            sb.Append("[总页数:<span class='pagerRight'>" + TotalPage + "</span>]");
            sb.Append("[当前为第<span class='pagerRight'>"+PageIndex+"</span>页]</div>");
            
            writer.WriteLine(sb.ToString());
        }
        /**//// <summary>
        /// 当前页面的路径
        /// </summary>
        string BuildNewPageUrl(int page)
        {
            
            HttpRequest request=HttpContext.Current.Request;
            //页面没有参数
            if(request.QueryString.Count==0)
            {
                return request.Url.PathAndQuery+"?"+this.PageQuery+"="+page;                    
            }
                //如果当前页面没有页面查询参数，说明为第一页
            else if(request.QueryString[this.PageQuery]==null)
            {
                return request.Url.PathAndQuery+"&"+this.PageQuery+"="+page;                                                                   
            }
            else
            {
                return request.Url.PathAndQuery.Replace(this.PageQuery+"="+request.QueryString[this.PageQuery],this.PageQuery+"="+page.ToString());                
            }            
        }        
        /**//// <summary>
        /// 获取或者设置KuKuPager的背景图片
        /// </summary>
        public string BackGround
        {
            get
            {
                return _backGroud;
            }
            set
            {
                _backGroud=value;
            }
        }
        /**//// <summary>
        /// 获取或者设置KuKuPager的页查询参数
        /// </summary>
        public string PageQuery
        {
            get
            {
                return _pageQurey;
            }
            set
            {
                _pageQurey=value;
            }
        }
        /**//// <summary>
        /// 获取或者设置KuKuPager首页编号
        /// </summary>
        public int FirstPageNum
        {
            get
            {
                return _firstPage;
            }
            set
            {
                _firstPage=value;
            }
        }
        /**//// <summary>
        /// 获取或者设置KuKuPager页面大小
        /// </summary>
        public int PageSize
        {
            get
            {
                return _pageSize;
            }
            set
            {
                _pageSize=value;
            }
        }
        /**//// <summary>
        /// 获取或者设置KuKuPager总共的记录数目
        /// </summary>
        public int TotalRecord
        {
            get
            {
                return _totalRecord;
            }
            set
            {
                _totalRecord=value;
            }
        }
        public int PageIndex
        {
            get
            {
                return _pageIndex;                
            }
        }
        /**//// <summary>
        /// 获取或者设置KuKuPager总页数
        /// </summary>
        public int TotalPage
        {
            get
            {                
                return _totalPage;
            }
        }
        
    }
}