asp.net 长文章通过设定的行数分页

public string outputbyline(string strcontent)//通过设定的行数分页
{
int pagesize = int.parse(configurationmanager.appsettings["pagesize"]);//每页显示行数从config文件中取出
string linebreak = configurationmanager.appsettings["linebreak"];//换行符从config文件中取出
string linebreaks = "<" + linebreak + ">";
string linebreake = "</" +linebreak+">";
strcontent = strcontent.replace("\r\n", "");
string[] strlined = strcontent.split(new string[] {linebreaks, linebreake }, stringsplitoptions.removeemptyentries);//以div为换行符
int pagecount = strlined.length / pagesize;
int pagecountplus = strlined.length % pagesize == 0 ? 0 : 1;//非满页
pagecount = pagecount + pagecountplus;//总页数
int currentpage = 1;//当前页码
string displaytext = null;
if (request.querystring["pageindex"]!=null) //获取翻页页码
{
currentpage = convert.toint32(request.querystring["pageindex"].tostring());
}
string pageinfo = "";//页数信息
for (int i = 1; i < pagecount+1; i++)
{

if (i==currentpage)
{
pageinfo += " 第" + i + "页";
if (pagecount>1)
{
pageinfo += " | ";
}
}
else
{
pageinfo += string.format("<a href='newshow.aspx?pageindex={0}' title='翻到第{0}页'>{0} | </a>",i);
}
}
labpagenumber.text = pageinfo;
for (int i = (currentpage-1)*pagesize; i < currentpage*pagesize&&i<strlined.length; i++)
{
displaytext += "<div>" + strlined[i] + "</div>";
}
return displaytext;
}