testDataContext dc = new testDataContext(); public string GetPageNum(GridView GridViewName, int pagesize, IQueryable<test> sql) { int page; if (HttpContext.Current.Request.QueryString["page"] != null) page = Convert.ToInt32(HttpContext.Current.Request.QueryString["page"]); else page = 1; //var sql = from o in dc.test select o; int total = sql.Count();//总数据量 var sqls = sql.Skip((page - 1) * pagesize).Take(pagesize); GridViewName.DataSource = sqls; GridViewName.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; }

public static string GetPageNum(DataTable ds, DataList datalistname, int pagesize) { PagedDataSource objPds = new PagedDataSource(); objPds.DataSource = ds.DefaultView; objPds.AllowPaging = true; int total = ds.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; datalistname.DataSource = objPds; datalistname.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; }