我的分页代码

  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)
   {
    string PageIndex=Request.QueryString["PageIndex"];
    if(PageIndex==null||PageIndex.Length==0)//这种方法判断快一些
    {
     this.BindData(this.Repeater1,1,5);
     this.Label1.Text=this.ViewPage(1,5);
    }
    else
    {
     this.BindData(this.Repeater1,Convert.ToInt32(PageIndex),5);
     this.Label1.Text=this.ViewPage(Convert.ToInt32(PageIndex),5);
    }
   }

  }

  /// <summary>
  /// 数据绑定
  /// </summary>
  /// <param name="rep">Repeater控件</param>
  /// <param name="PageIndex">当前页</param>
  /// <param name="parpage">每页大小</param>
  private void BindData(Repeater rep,int PageIndex,int parpage)
  {
   GJGK.WEB.Business.Conn conn=new GJGK.WEB.Business.Conn(System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"]);
   rep.DataSource=conn.Read("tbl_Soft_Softs","*","AddedDate",parpage,PageIndex,0,1,"").Tables[0].DefaultView;
   rep.DataBind();
  }

  /// <summary>
  /// 显示分页
  /// </summary>
  /// <param name="PageIndex">当前页</param>
  /// <param name="parpage">每页大小</param>
  private string ViewPage(int PageIndex,int parpage)
  {
   int[] arr=PageSize(parpage);
   int totalrecord=arr[0];//总的记录数
   int totalpage=arr[1];//总的页数
   string str="";
   string url="Default.aspx";
   if(PageIndex==1)
   {
    if(totalrecord<parpage)
    {
     str+="&nbsp;";
    }
    else
    {
     str+="<span style=\"font-size:12px;color:#cccccc;text-decoration: none;\">首页</span>&nbsp;&nbsp;&nbsp;<span style=\"color:#cccccc;font-size:12px\">上一页</span>&nbsp;&nbsp;&nbsp;<a href=\""+url+"?PageIndex="+(PageIndex+1)+"\" style=\"color:#000000;text-decoration: none;font-size:12px\">下一页</a>&nbsp;&nbsp;&nbsp;<a href=\""+url+"?PageIndex="+totalpage+"\" style=\"font-size:12px;color:#000000;text-decoration: none;\">尾页</a>";
     str+="&nbsp;&nbsp;&nbsp;<span style=\"font-size:12px\">页次:<b><font color=\"red\">"+PageIndex+"</font></b>/<b>"+totalpage+"</b>&nbsp;&nbsp;&nbsp;<b>"+parpage+"</b>条主题/页</span>";
    }
   }
   else if(PageIndex<totalpage)
   {
    str+="<a href=\""+url+"?PageIndex=1\" style=\"font-size:12px;color:#000000;text-decoration: none;\">首页</a>&nbsp;&nbsp;&nbsp;<a href=\""+url+"?PageIndex="+(PageIndex-1)+"\" style=\"color:#000000;text-decoration: none;font-size:12px\">上一页</a>&nbsp;&nbsp;&nbsp;<a href=\""+url+"?PageIndex="+(PageIndex+1)+"\" style=\"color:#000000;text-decoration: none;font-size:12px\">下一页</a>&nbsp;&nbsp;&nbsp;<a href=\""+url+"?PageIndex="+totalpage+"\" style=\"font-size:12px;color:#000000;text-decoration: none;\">尾页</a>";
    str+="&nbsp;&nbsp;&nbsp;<span style=\"font-size:12px\">页次:<b><font color=\"red\">"+PageIndex+"</font></b>/<b>"+totalpage+"</b>&nbsp;&nbsp;&nbsp;<b>"+parpage+"</b>条主题/页</span>";
   }
   else if(PageIndex==totalpage)
   {
    int a=totalrecord%parpage;
    if(a==0)
    {
     a=parpage;
    }
    str+="<a href=\""+url+"?PageIndex=1\" style=\"font-size:12px;color:#000000;text-decoration: none;\">首页</a>&nbsp;&nbsp;&nbsp;<a href=\""+url+"?PageIndex="+(PageIndex-1)+"\" style=\"color:#000000;text-decoration: none;font-size:12px\">上一页</a>&nbsp;&nbsp;&nbsp;<span style=\"font-size:12px;color:#cccccc;text-decoration: none;\">下一页</span>&nbsp;&nbsp;&nbsp;<span style=\"font-size:12px;color:#cccccc;text-decoration: none;\">尾页</span>";
    str+="&nbsp;&nbsp;&nbsp;<span style=\"font-size:12px\">页次:<b><font color=\"red\">"+PageIndex+"</font></b>/<b>"+totalpage+"</b>&nbsp;&nbsp;&nbsp;<b>"+a+"</b>条主题/页</span>";
   }
   else
   {
    str+="<font color=\"red\">当前页没有数据</font>";
   }
   return str;
  }

  /// <summary>
  /// 返回总的页数总条数数组
  /// </summary>
  /// <param name="parpage">每一页的大小</param>
  /// <returns>返回总的页数</returns>
  private int[] PageSize(int parpage)
  {
   GJGK.WEB.Business.Conn conn=new GJGK.WEB.Business.Conn(System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"]);
   int totalnum=Convert.ToInt32(conn.Read("tbl_Soft_Softs","*","AddedDate",1,1,1,1,"").Tables[0].Rows[0][0]);
   int totalpage=(int)System.Math.Ceiling(totalnum/Convert.ToDouble(parpage));
   int[] arr=new int[]{totalnum,totalpage};
   return arr;
  }