ASP.NET大数据量查询分页例子

 如果是access 就用这个SQLHELPER http://hi.csdn.net/link.php?url=http://blog.csdn.net/zzxap

如果是MSSQL 就用这个sqlhelper http://www.cnblogs.com/zzxap/archive/2009/11/05/1596773.html

前台 如果你用的是 gridview 就把Repeater替换成gridview 。一样的。。

中间1

Eval("product_type").ToString()

Eval("product_desc").ToString()

价格<%#Eval("price")%>

  共页 条记录 首頁 上一頁 下一頁 尾頁当前第 頁   转到第 頁

 

using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.OleDb; using System.Text; using Microsoft.ApplicationBlocks.Data; public partial class _Default : System.Web.UI.Page { string strpage = ""; int PageCount = 0; int RecCount = 0; int CurrentPage = 0; int Current = 0; int Pages = 0; int JumpPage = 0;//跳到第几页 //每页显示记录数 int PageSize =20; //每页显示20条记录 string product_type = ""; string type = ""; string headid = ""; private static int PageIndex=1; private static int PageCounts=1; private static int JumpPages=1; protected void Page_Load(object sender, EventArgs e) { #region 接收从查询页面传递过来的参数。 if (Request.QueryString["product_type"]!=null) { product_type = Server.UrlDecode(Request.QueryString["product_type"].ToString()); } if (Request.QueryString["type"]!=null) { type = Server.UrlDecode(Request.QueryString["type"].ToString()); } #endregion // headid = Request.QueryString["headid"]; if (!IsPostBack) { //------------------------------------------------------------- RecCount = Calc(); //计算总记录数 PageCount = RecCount / PageSize + OverPage(); //计算总页数 PageCounts = RecCount / PageSize - ModPage(); if (!string.IsNullOrEmpty(strpage)) { //设置当前页为返回页 PageIndex= int.Parse(strpage); } else { PageIndex= 1; //设置当前页为11 //Session["CurPage"] = 1; } JumpPages = PageCount; LPageCount.Text = PageCount.ToString(); //总页数 LTotalCount.Text = RecCount.ToString(); //总记录数 if (RecCount <= PageSize) { gotoPage.Enabled = false; } else { gotoPage.Enabled = true; } //------------------------------------------------------------- GetMainData(); //绑定数据 } } #region "計算總行數" public int OverPage() { //算余 int pages = 0; if (RecCount % PageSize != 0) { pages = 1; } else { pages = 0; } return pages; } public int ModPage() { //算余 int pages = 0; if (RecCount % PageSize == 0 && RecCount != 0) { pages = 1; } else { pages = 0; } return pages; } public int Calc() { //計算記錄總數 DataSet ds= new DataSet(); StringBuilder ass = new StringBuilder("Select count(id) from M_product where 1=1 "); //如果有查询参数传入，就计算查询结果的总数 if (type != null && type != "") { ass.Append(" and [type]=" + type.Replace("'", "") + " "); } if (product_type != null && product_type != "") { ass.Append(" and product_type=" + product_type.Replace("'", "") + " "); } string bss = ass.ToString(); int RecordCount = 0; ds = SqlHelper.ExecuteDataset(SqlHelper.Conn, CommandType.Text, bss); RecordCount = Int32.Parse(ds.Tables[0].Rows[0][0].ToString()); //RecordCount = 10; if (RecordCount < PageSize) { Fistpage.Enabled = false; Prevpage.Enabled = false; Nextpage.Enabled = false; Lastpage.Enabled = false; } else { Fistpage.Enabled = true; Prevpage.Enabled = true; Nextpage.Enabled = true; Lastpage.Enabled = true; } return RecordCount; } #endregion #region "翻頁" public void Pager_Click(object sender, EventArgs e) { CurrentPage = (int)PageIndex; Pages = (int)PageCounts; string arg = ((LinkButton)sender).CommandName.ToString(); switch (arg) { case "next": //下一页 如果要支持URL分页。 只要把CurrentPage 从URL获取就可以了 if (CurrentPage < Pages + 1) { CurrentPage = CurrentPage + 1; } break; case "prev": //上一页 if (CurrentPage != 1) { CurrentPage -= 1; } break; case "last": //最后一页 CurrentPage = Pages + 1; break; default: //首页 CurrentPage = 1; break; } //根据页数控制翻页按钮的可用与否 if (CurrentPage > 1) { Fistpage.Enabled = true; Prevpage.Enabled = true; } else { Fistpage.Enabled = false; Prevpage.Enabled = false; } if (CurrentPage == Pages + 1) { Nextpage.Enabled = false; Lastpage.Enabled = false; } else { Nextpage.Enabled = true; Lastpage.Enabled = true; } PageIndex= CurrentPage; //获取改變后的页码 // //Session["CurPage"] = CurrentPage; //用户返回到当前页 GetMainData(); } //转到第几页 protected void gotoPage_TextChanged(object sender, System.EventArgs e) { string asd = this.gotoPage.Text.Trim().ToString(); JumpPage = (int)JumpPages; if (string.IsNullOrEmpty(asd)) { Alert("out of page range"); return; } if (Int32.Parse(gotoPage.Text) > JumpPage || Int32.Parse(gotoPage.Text) <= 0 || string.IsNullOrEmpty(asd)) { Alert("out of page range");//页数超出范围 return; } else { int InputPage = Int32.Parse(gotoPage.Text.ToString()); PageIndex= InputPage; ////Session["CurPage"] = InputPage; GetMainData();//绑定数据集 } } #endregion public void Alert(string rtt) { //顯示提示信息 // System.Web.UI.ScriptManager.RegisterClientScriptBlock(UpdatePanel1, this.GetType(), "AjaxMsgBox", "alert('" + rtt + "');", true); } private void GetMainData() { CurrentPage = (int)PageIndex;//获取当前页 Pages = (int)PageCounts;//获取总页数 LCurrentPage.Text = CurrentPage.ToString(); int PageSize2 = PageSize * (CurrentPage - 1)+1; if (type != null && product_type!=null)//如果是手机 { //用于函数参数的个数不对 在查询表达式 'isnull(max(xx.id),0)' 中。 // SELECT 子句中包含一个保留字、拼写错误或丢失的参数，或标点符号不正确。 //分页的核心语句，决定性能 row_number()也不错。也可以将以下语句改为存储过程。 StringBuilder sql = new StringBuilder("select top " + PageSize + " * from M_product a "); sql.Append(" where a.[id]>( select max(xx.[id]) from ( select TOP " + PageSize2 + " [id] from M_product where 1=1 "); if (type != null && type != "") { sql.Append(" and [type]=" + type.Replace("'", "")+""); } if (product_type != null && product_type != "") { sql.Append(" and product_type=" + product_type.Replace("'", "") + ""); } sql.Append(" ORDER BY [id] )xx ) "); if (type != null && type != "") { sql.Append(" and a.[type]=" + type.Replace("'", "") + ""); } if (product_type != null && product_type != "") { sql.Append(" and a.product_type=" + product_type.Replace("'", "") + ""); } sql.Append(" ORDER BY a.[id] "); mainlist.DataSource = SqlHelper.ExecuteDataset( SqlHelper.Conn, CommandType.Text,sql.ToString()); mainlist.DataBind(); } } }