asp.net 分页链接方法

/// <summary>
/// 分页链接
/// </summary>
/// <param name="pagesize"></param>
/// <param name="recordcount"></param>
/// <param name="currentpage"></param>
/// <param name="prev">当前页前面显示的数量</param>
/// <param name="next">当前页后面显示的数量</param>
/// <returns></returns>
public string pagelink(int pagesize, int recordcount, int currentpage, int prev, int next)
{
int pagecount = recordcount % pagesize == 0 ? (recordcount / pagesize) : ((int)math.ceiling((double)recordcount / pagesize));
stringbuilder sb = new stringbuilder();
if (currentpage > 1 && recordcount > 1)
{
sb.append("<a href=\"?page=");
sb.append((currentpage - 1).tostring());
sb.append("\">前一页</a>  ");
}
if (currentpage > prev + 1)
sb.append("<a href=\"?page=1\">1</a> ... ");
if (currentpage < prev)
next = next + prev - currentpage + 1;
if (next > pagecount - currentpage)
prev = prev + next - (pagecount - currentpage);
for (int i = 1; i <= pagecount; i++)
{
if (i == currentpage)
{
sb.append("<a href=\"?page=" + i + "\" class=\"current\" ><font color=\"red\">" + i + "</font></a>  ");
}
else
{
if (i > (currentpage - prev - 1) && i < (currentpage + next + 1))
{
sb.append("<a href=\"?page=" + i + "\">" + i + "</a>  ");
}
}
}
if (currentpage < pagecount - next)
sb.append("... <a href=\"?page=" + pagecount.tostring() + "\">" + pagecount.tostring() + "</a>");
if (currentpage < pagecount)
sb.append("  <a href=\"?page=" + (currentpage + 1).tostring() + "\">后一页</a>");
return sb.tostring();
}