public class PageNums
{
/// </summary>
/// <param name="ds">DataSet实例</param>
/// <param name="datalistname">Repeater名称</param>
/// <param name="pagesize">分页大小</param>
public static string GetPageNum(DataSet ds, DataList dl, int pagesize)
{
PagedDataSource objPds = new PagedDataSource();
objPds.DataSource = ds.Tables[0].DefaultView;
objPds.AllowPaging = true;
int total = ds.Tables[0].Rows.Count;
objPds.PageSize = pagesize;
int page;
if (HttpContext.Current.Request.QueryString["page"] != null)
page = Convert.ToInt32(HttpContext.Current.Request.QueryString["page"]);
else
page = 1;
objPds.CurrentPageIndex = page - 1;
dl.DataSource = objPds;
dl.DataBind();
int allpage = 0;
int next = 0;
int pre = 0;
int startcount = 0;
int endcount = 0;
string pagestr = ""; if (page < 1) { page = 1; }
//计算总页数
if (pagesize != 0)
{
allpage = (total / pagesize);
allpage = ((total % pagesize) != 0 ? allpage + 1 : allpage);
allpage = (allpage == 0 ? 1 : allpage);
}
next = page + 1;
pre = page - 1;
startcount = (page + 5) > allpage ? allpage - 9 : page - 4;//中间页起始序号
//中间页终止序号
endcount = page < 5 ? 10 : page + 5;
if (startcount < 1) { startcount = 1; } //为了避免输出的时候产生负数,设置如果小于1就从序号1开始
if (allpage < endcount) { endcount = allpage; } //页码+5的可能性就会产生最终输出序号大于总页码,那么就要将其控制在页码数之内
pagestr = "共" + allpage + "页 "; pagestr += page > 1 ? "<a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=1\">首页</a> <a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + pre + "\">上一页</a>" : "首页 上一页";
//中间页处理,这个增加时间复杂度,减小空间复杂度
for (int i = startcount; i <= endcount; i++)
{
pagestr += page == i ? " <font color=\"#ff0000\">" + i + "</font>" : " <a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + i + "\">" + i + "</a>";
}
pagestr += page != allpage ? " <a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + next + "\">下一页</a> <a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + allpage + "\">末页</a>" : " 下一页 末页"; return pagestr; }
}
这个上面是一个数字分页的代码,假如我有一个页面是GetProductByClass.aspx页面需要分页,由于我是点击一个分类进来的这样的话url上就会带有参数 例如:GetProductByClass.aspx?classname="aa"但是这里 pagestr += page == i ? " <font color=\"#ff0000\">" + i + "</font>" : " <a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + i + "\">" + i + "</a>";
HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + i + "\">"假如到第2页,网站的url就只是GetProductByClass.aspx?page=2没有了参数,这样就导致了第二个页面的没有产品了,也就是没有实现分页..
请问怎么可以解决
那个分类的classname是动态生成的好不好,而且还不止一个参数呢