文章分页浏览(二)

   分页的方法:

 

public string OutputBySize(string p_strContent, string bType)
    {
        string m_strRet = "";
        int m_intPageSize =500;//文章每页大小 
        int m_intCurrentPage = 1;//设置第一页为初始页 
        int m_intTotalPage = 0;
        int m_intArticlelength = p_strContent.Length;//文章长度 
        if (m_intPageSize < m_intArticlelength)
        {//如果每页大小大于文章长度时就不用分页了 
            if (m_intArticlelength % m_intPageSize == 0)
            {//set total pages count 
                m_intTotalPage = m_intArticlelength / m_intPageSize;
            }
            else
            {//if the totalsize 
                m_intTotalPage = m_intArticlelength / m_intPageSize + 1;
            }
            if (Request.QueryString["ps"] != null)
            {//set Current page number 
                try
                {//处理不正常的地址栏的值 
                    m_intCurrentPage = Convert.ToInt32(Request.QueryString["ps"]);
                    if (m_intCurrentPage > m_intTotalPage)

                        m_intCurrentPage = m_intTotalPage;

                }
                catch
                {
                    //m_intCurrentPage = m_intCurrentPage; 
                }
            }
            //set the page content 设置获取当前页的大小 
            if (m_intCurrentPage < m_intTotalPage)
            {
                m_intPageSize = m_intCurrentPage < m_intTotalPage ? m_intPageSize : (m_intArticlelength - m_intPageSize * (m_intCurrentPage - 1));
                m_strRet += p_strContent.Substring(m_intPageSize * (m_intCurrentPage - 1), m_intPageSize);
            }
            else if (m_intCurrentPage == m_intTotalPage)
            {
                int mm_intPageSize = m_intArticlelength - m_intPageSize * (m_intCurrentPage - 1);
                m_strRet += p_strContent.Substring(m_intArticlelength - mm_intPageSize);
            }

            string m_strPageInfo = "";
            for (int i = 1; i <= m_intTotalPage; i++)
            {
                if (i == m_intCurrentPage)
                    m_strPageInfo += "[" + i + "]";
                else
                    m_strPageInfo += " <a href=gywm.aspx?Btype=" + bType + "&ps=" + i + ">[" + i + "] </a> ";

            }
            if (m_intCurrentPage > 1)
                m_strPageInfo = " <a href=gywm.aspx?Btype=" + bType + "&ps=" + (m_intCurrentPage - 1) + ">上一页 </a>" + m_strPageInfo;
            if (m_intCurrentPage < m_intTotalPage)
                m_strPageInfo += " <a href=gywm.aspx?Btype=" + bType + "&ps=" + (m_intCurrentPage + 1) + ">下一页 </a>";
            //输出显示各个页码 
            this.ShowPageNumber.Text = " <p> </p>" + m_strPageInfo;

        }
        else
        {
            m_strRet += p_strContent;
        }
        return m_strRet;
    }