来个实用的net手动分页，不懂的留言啊，原创啊

public string GeneratePagetr(int pagesize,int count,int pageindex,string url)
        {
            var pageCount = count/pagesize;//页码纠错
            if (count%pagesize != 0)
           
                pageCount++;
            if (pageCount < 1)
            {
                pageCount = 1;
            }
            else if (pageindex > pageCount)
            {
                pageCount = pageindex;
            }
            var sbPager = new StringBuilder();
            sbPager.Append("<div>");
            if (pageindex == 1)
            {
                sbPager.Append("<span>上一页<span>");
            }
            else
            {
                sbPager.Append("<span><a href=\""+url+"&p=