查出2级分类里一个大类的里的所有产品 

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.OleDb;
using System.Data;

namespace _2211 {
    public partial class _Default : System.Web.UI.Page {
        protected void Page_Load(object sender, EventArgs e) {
            myrp.DataSource = ds2(ia(ds1(2)));
            myrp.DataBind();
        }
        public DataSet myds(string str) {
            OleDbConnection myconn = condb();
            myconn.Open();
            DataSet ds = new DataSet();
            OleDbDataAdapter oda = new OleDbDataAdapter(str, myconn);
            oda.Fill(ds, "table");
            myconn.Close();
            return ds;
        }
        public static OleDbConnection condb() {
            return new OleDbConnection("provider=microsoft.jet.oledb.4.0;data source=" + System.Web.HttpContext.Current.Server.MapPath("MyDataBase.MDB"));
        }
        public DataSet ds1(int i) {
            return myds("select * from T_ProductType where id = " + i + " or P_TypeNumber = " + i + "");
        }
        public DataSet ds2(string str) {
            return myds("select * from T_Product where P_Type in (" + str + ")");
        }
        public string ia(DataSet ds) {
            string str = "";
            for (int i = 0; i < ds.Tables[0].Rows.Count; i++) {
                str += ds.Tables[0].Rows[i]["id"].ToString()+",";
            }
            str = str.Substring(0, str.Length - 1);
            return str;
        }
    }
}

 

这是类型表

这是产品表

这是前台

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="_2211._Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:Repeater ID="myrp" runat="server">
    <ItemTemplate>
    <%# Eval("id")%>
    </ItemTemplate>
    </asp:Repeater>
    </div>
    </form>
</body>
</html>

 

这是结果

posted on 2010-12-25 15:13  卑鄙De小贝  阅读(370)  评论(0)    收藏  举报

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