一个比较好看的网页翻页效果_[Asp.Net教程] 显示效果:1 2 3 4 5>> ,点击了4后又显示 ,4 5 6 7 8>>并转到第4页 ,如果总共有10页, 显示到6 7 8 9 10>>就不再显示了。 .aspx 【当前页: | 总记录数: 】 <%=strpg %> .cs protected string strpg = string.Empty; protected string strUrl = "aa.aspx"; protected int PgSize = 15; protected string wherestr = string.Empty; protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { int curpg = GetIdx(); if (Request.QueryString["val"] != null) { wherestr = Request.QueryString["val"].ToString(); string strVal = "where NewsTitle like '%" + wherestr + "%' "; Prepg(curpg, strVal); } else { Prepg(curpg, wherestr); }
} }
#region 加载页面 protected void Prepg(int Idx, string strWhere) { .....//获取一个dataset int RecordCount = Convert.ToInt32(ds.Tables[1].Rows[0].ItemArray[0].ToString()); strpg = Getpgstr(RecordCount, PgSize, Idx, strUrl); lblcurpg.Text = Idx.ToString(); lblRecord.Text = RecordCount.ToString(); } #endregion
#region 获取分页控件 protected string Getpgstr(int total, int per, int page, string query_string) { return pagination(total, per, page, query_string); } #endregion
protected void btnSearch_Click(object sender, EventArgs e) { Response.Redirect(strUrl + "?val=" + txtNew.Text); }
#region 获取当前页 protected int GetIdx() { int curpg; if (Request.QueryString["page"] == null) { curpg = 1; } else { curpg = Convert.ToInt32(Request.QueryString["page"].ToString()); } return curpg; } #endregion public static string pagination(int total, int per, int page, string query_string) { //page表是当前页 //per表示每页显示记录数 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 (per != 0) { allpage = (total / per); allpage = ((total % per) != 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 ? "" + query_string + "?page=1\">首页 " + query_string + "?page=" + pre + "\">上一页" : "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 ? " " + i + "" : " " + query_string + "?page=" + i + "\">" + i + ""; } pagestr += page != allpage ? " " + query_string + "?page=" + next + "\">下一页 " + query_string + "?page=" + allpage + "\">末页" : " 下一页 末页";
return pagestr; } 来源:csdn
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