asp.net实现新闻页分页功能

//生成静态网页
string path = Server.MapPath("~/news/" + folder + "/");
string file_template_name = Server.MapPath("~/news/template.htm");   //新闻模版文件
string file_template_content = "";
StreamReader sr_reader = new StreamReader(file_template_name, Encoding.GetEncoding("gb2312"));
file_template_content = sr_reader.ReadToEnd();
sr_reader.Close();
string[] subContent = FileSplit(content);
string file_content = "";
int pageNum = 0;
while (pageNum < 10 && subContent[pageNum] != "" && subContent[pageNum] != null)
    pageNum++;
for (int index = 0; index < pageNum; index++)
{
    file_content = file_template_content;
    file_content = file_content.Replace("$$category", list_department.SelectedItem.Text);    //新闻类别
    file_content = file_content.Replace("$$title", title);   //新闻标题
    file_content = file_content.Replace("<!--来源：$$author-->", "来源：" + author);        //作者
    file_content = file_content.Replace("$$time", time);         //添加时间
    file_content = file_content.Replace("$$content", subContent[index]);       //新闻正文
    string pageLink = "";
    int firstPage = 0;
   //生成页码
    if (index > 2) firstPage = index - 2;
    for (int i1 = firstPage; i1 < index + 3 && i1 < pageNum; i1++)
    {
        if (i1 == index)
pageLink = pageLink + "[" + (index + 1) + "]" + "&nbsp; &nbsp; &nbsp; &nbsp;";
        else pageLink = pageLink + "<a href=" + htmlfilename + i1 + ".htm>[" + (i1 + 1) + "]</a>&nbsp; &nbsp; &nbsp; &nbsp;";

    }
    if (index < pageNum - 1)
        pageLink = pageLink + "<a href=" + htmlfilename + (index + 1) + ".htm>" + "下一页" + "</a>&nbsp; &nbsp; &nbsp; &nbsp;";
    if (index > 0)
        pageLink = "<a href=" + htmlfilename + (index - 1) + ".htm>" + "上一页" + "</a>&nbsp; &nbsp; &nbsp; &nbsp;" + pageLink;
    file_content = file_content.Replace("<!-- $$pageLink -->", pageLink);
    if (index == pageNum - 1&&attachment_filename != null && attachment_filename != String.Empty)
    {
        string[] attachment = attachment_filename.Split(new char[] { '|' });
        string attachmenthtml = "<a href="attachment/" + attachment[0] + "" >" + attachment[0] + "</a>";
        for (int j = 1; j < attachment.Length; j++)
attachmenthtml = attachmenthtml + "<br/> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<a href="attachment/" + attachment[j] + "" >" + attachment[j] + "</a>";
        file_content = file_content.Replace("$$attachment", attachmenthtml);
    }
    StreamWriter sw = new StreamWriter(path + htmlfilename + index + ".htm", false, Encoding.GetEncoding("gb2312"));
    sw.Write(file_content);
    sw.Flush();
    sw.Close();
}
HyperLink1.Text = "预览:　" + title;
HyperLink1.NavigateUrl = "../news/" + folder + "/" + htmlfilename  + "0" + ".htm";
HyperLink1.Visible = true;
txt_time.Text = DateTime.Now.ToString("yyyy-MM-dd");
txt_title.Text = "";
txt_author.Text = "";
FreeTextBox1.Text = "";
}
catch (Exception e)
{
 }
 }
//将正文分成多个页面
protected string[] FileSplit(string fileContent)
{
 int fileIndex = 0;
 string[] splitedFile = new string[10];
 while (fileContent.Length > 1500 && fileIndex < 9)    //每页至少1500个字符
{
if (fileContent.IndexOf("<P>", 1500) < 0) break;
   splitedFile[fileIndex] = fileContent.Substring(0, fileContent.IndexOf("<P>", 1500));
   fileContent = fileContent.Remove(0, splitedFile[fileIndex].Length);
   fileIndex++;
}
   splitedFile[fileIndex] = fileContent;   //超过9页,剩下部分全放第十页
   return splitedFile;
}
}