C# 带偏移量自定义分页方法

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    /// <summary>    /// 带偏移量自定义分页方法    /// </summary>    /// <param name="PageSize">每页条数</param>    /// <param name="CurrentPage">当前页</param>    /// <param name="TotalCountRecord">总条数</param>    /// <param name="where">条件</param>    /// <returns></returns>    public string BuildPagers(int PageSize, int CurrentPage, int TotalCountRecord,string where)    {        //偏移量        int Step = 5;        int LeftNum = 0;//左值        int RightNum = 0;        string PageUrl = Request.FilePath;        int PageCount = (int)Math.Ceiling((double)(TotalCountRecord) / PageSize); //总页数         //当前页-步长  <1  则作值=1        if (CurrentPage - Step < 1)        {            LeftNum = 1;        }        else        {            LeftNum = CurrentPage - Step;        }        if (CurrentPage + Step > PageCount)        {            RightNum = PageCount;        }        else        {            RightNum = CurrentPage + Step;        }        StringBuilder OutPut = new StringBuilder();        string strUrl = "";        for (int i = LeftNum; i <= RightNum; i++)        {            if (i == CurrentPage)            {                OutPut.Append("<font style='margin-left:3px;' color=red>");                OutPut.Append(i.ToString());                OutPut.Append("</font>");            }            else            {                OutPut.Append("<a style='margin-left:3px;' href='");                OutPut.Append(PageUrl);                OutPut.Append("?" + where + "&page=");                OutPut.Append(i.ToString());                // OutPut.Append(strUrl);                OutPut.Append("'>");                OutPut.Append(i.ToString() + " ");                OutPut.Append("</a>");            }        }        if (CurrentPage > 1)        {            OutPut.Insert(0, string.Format("<a href='{0}?" + where + "&page={1}{2}'>上一页</a>", PageUrl, (CurrentPage - 1), strUrl));        }        if (CurrentPage < PageCount)        {            OutPut.Append("<a href='");            OutPut.Append(PageUrl);            OutPut.Append("?" + where + "&page=");            OutPut.Append(+CurrentPage + 1);            OutPut.Append(strUrl);            OutPut.Append("'>下一页</a></li>");            OutPut.Append("总记录数:<font color='red'>" + TotalCountRecord + "</font>  总页数:<font color='red'>" + PageCount + "</font>");        }        return OutPut.ToString();    }

    private void Bind(int Page,string  where)    {        str = BuildPagers(16, Page, GoodsFunBLL.GetGoodsListCount(where), where);        this.DataGoodsList.DataSource = GoodsFunBLL.GetGoodsByTypeIdList(16, Page,where);        this.DataGoodsList.DataBind();    }

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