Executing-a-Command


            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 int _id;
    private string _title;
    private string _director;
    public int Id
    {
        get { return _id; }
        set { _id = value; }
    }
    public string Title
    {
        get { return _title; }
        set { _title = value; }
    }
    public string Director
    {
        get { return _director; }
        set { _director = value; }
    }
    public void Update(int id, string title, string director)
    {
        SqlConnection con = new SqlConnection(_connectionString);
        SqlCommand cmd = new SqlCommand("UPDATE ProductS SET Title=@Title,Director=@Director WHERE Id=@Id", con);
        cmd.Parameters.AddWithValue("@Title", title);
        cmd.Parameters.AddWithValue("@Director", director);
        cmd.Parameters.AddWithValue("@Id", id);
        using (con)
        {
            con.Open();
            cmd.ExecuteNonQuery();
        }
    }
    public void Delete(int id)
    {        
        SqlConnection con = new SqlConnection(_connectionString);
        SqlCommand cmd = new SqlCommand("DELETE ProductS WHERE Id=@Id", con);
        cmd.Parameters.AddWithValue("@Id", id);
        using (con)
        {
            con.Open();
            cmd.ExecuteNonQuery();
        }
    }
    public List GetAll()
    {
        List results = new List();
        SqlConnection con = new SqlConnection(_connectionString);
        SqlCommand cmd = new SqlCommand("SELECT Id,Title,Director FROM Products", con);
        using (con)
        {
            con.Open();
            SqlDataReader reader = cmd.ExecuteReader();
            while (reader.Read())
            {
                Product newProduct = new Product();
                newProduct.Id = (int)reader["Id"];
                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

  
             connectionString="Data Source=.\SQLEXPRESS;
         AttachDbFilename=|DataDirectory|MyDatabase.mdf;Integrated Security=True;User Instance=True" />
  

    
File: index.aspx
<%@ Page Language="C#" %>
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">


    Show Product


    
    
            id="grdProducts"
        DataSourceID="srcProducts"
        DataKeyNames="Id"
        AutoGenerateEditButton="true"
        AutoGenerateDeleteButton="true"
        Runat="server" />
            id="srcProducts"
        TypeName="Product"
        SelectMethod="GetAll"
        UpdateMethod="Update"
        DeleteMethod="Delete"
        Runat="server" />
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