C#一个显示分页页码类

在ASP.NET开发中，常用到显示分页页码程序，以下是本人写的一个类，还未完善，但已可使用。

在显示时当前页码会自动据中。并可自定义分类链接代码

using System;

namespace bookshopcn.Service
{
 /// <summary>
 /// Page 的摘要说明。
 /// </summary>
 public class Pager
 {
  public Pager(){}

  protected static int _ButtonCount = 11;
  protected static string _NextPage = "<a href={0}>下一页</a>";
  protected static string _LinkUrl = "?page={0}";
  protected static string _LastPage = "<a href={0}>上一页</a>";

  /// <summary>
  /// 下一页链接
  /// </summary>
  public static string NextPage
  {
   get{return _NextPage;}
   set{_NextPage = value;}
  }

  /// <summary>
  /// 上一页链接
  /// </summary>
  public static string LastPage
  {
   get{return _LastPage;}
   set{_LastPage = value;}
  }

  /// <summary>
  /// 设置时为格式
  /// </summary>
  public static string NextPageText
  {
   get{return _NextPage;}
   set{_NextPage = value;}
  }

  /// <summary>
  /// 显示按钮总数
  /// </summary>
  public static int BottonCount
  {
   get{return _ButtonCount;}
   set{_ButtonCount = value;}
  }
  /// <summary>
  /// 返回页面的分页信息
  /// </summary>
  /// <param name="_RecordCount">记录总数</param>
  /// <param name="_PageSize">分页长度</param>
  /// <param name="_PageIndex">当前页</param>
  /// <returns></returns>
  public static string PageInfo(int _RecordCount,int _PageSize,int _PageIndex,string link)
  {  
   string Firstpage = string.Format("<a href="+link+">[首页]</a>","1");
   string pageinfo = "共有{0}页 / 当前第{1}页 "+Firstpage;
   string pagenext = " <a href="+link+"><b>{0}</b></a> ";
   int PageCount = _RecordCount / _PageSize; // 页数合计
   PageCount = PageCount <= 0?1:PageCount;
   pageinfo = string.Format(pageinfo,PageCount.ToString(),_PageIndex.ToString());
   string LastPage = string.Format("<a href="+link+">[末页]</a>",PageCount);

   int n = _ButtonCount/2;  //左右显示个数
   int StartPage = _PageIndex - n;
   int EndPage = _PageIndex + n;
   _LastPage = string.Format(_LastPage,link);  //上一页
   _LastPage = _PageIndex-1>1?string.Format(_LastPage,(_PageIndex-1).ToString()):string.Format(_NextPage,"1");

   _NextPage = string.Format(_NextPage,link); //下一页
   _NextPage = _PageIndex+1<=PageCount?string.Format(_NextPage,_PageIndex.ToString()):string.Format(_NextPage,PageCount.ToString());

   if(EndPage > PageCount )
   {
    StartPage = (_PageIndex - n) - (EndPage-PageCount);
    EndPage = PageCount ;
   }
   if(StartPage < 1 )
   {
    EndPage = _ButtonCount;
    StartPage = 1 ;
   }

   for(int i = StartPage;i<=EndPage;i++)
   {
    if(i != _PageIndex)
     pageinfo += string.Format(pagenext,i);
    else
     pageinfo += " <b>" + i.ToString() + "</b> ";
   }
   pageinfo += LastPage;
   return pageinfo;
  }
 }
}