Building Data Access Components with ADO.NET : SqlDataReader « ADO.net Database « ASP.NET Tutorial





File: App_Code\Product.cs

using System;
using System.Data;
using System.Data.SqlClient;
using System.Web.Configuration;
using System.Collections.Generic;

public class Product
{
    private static readonly string _connectionString;

    private string _title;
    private string _director;

    public string Title
    {
        get { return _title; }
        set { _title = value; }
    }

    public string Director
    {
        get { return _director; }
        set { _director = value; }
    }

    public List<Product> GetAll()
    {
        List<Product> results = new List<Product>();
        SqlConnection con = new SqlConnection(_connectionString);
        SqlCommand cmd = new SqlCommand("SELECT Title,Director FROM Products", con);
        using (con)
        {
            con.Open();
            SqlDataReader reader = cmd.ExecuteReader();
            while (reader.Read())
            {
                Product newProduct = new Product();
                newProduct.Title = (string)reader["Title"];
                newProduct.Director = (string)reader["Director"];
                results.Add(newProduct);
            }
        }
        return results;
    }

    static Product()
    {
        _connectionString = WebConfigurationManager.ConnectionStrings["Products"].ConnectionString;
    }
}
File: Web.config

<configuration>
  <connectionStrings>
    <add name="Products" 
         connectionString="Data Source=.\SQLEXPRESS;
         AttachDbFilename=|DataDirectory|MyDatabase.mdf;Integrated Security=True;User Instance=True" />
  </connectionStrings>
</configuration>

File: ShowProduct.aspx

<%@ Page Language="C#" %>
<!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 id="Head1" runat="server">
    <title>Show Product</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

    <asp:GridView
        id="grdProducts"
        DataSourceID="srcProducts"
        Runat="server" />

    <asp:ObjectDataSource
        id="srcProducts"
        TypeName="Product"
        SelectMethod="GetAll"
        Runat="server" />

    </div>
    </form>
</body>
</html>










18.6.SqlDataReader
18.6.1.Building Data Access Components with ADO.NET
18.6.2.Returning a Resultset
18.6.3.DataReader Multiple result set
18.6.4.The SqlConnection, SqlCommand, and SqlDataReader objects (C#)
18.6.5.The SqlConnection, SqlCommand, and SqlDataReader objects (VB)