using System;
using System.IO;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {    
        if (!IsPostBack)
        {           
            ListView1.DataSource = DataAccess.ListImages();
            DataBind();
        }
    }
        
    protected void Submit_Click(object sender, EventArgs e)
    {
            if (IsPostBack)
            HandleUploadedFile();
    }
        
    private void HandleUploadedFile()
    {
        // get the file instance
        HttpPostedFile fi = Request.Files.Get(0);        
        // create a byte array to store the file bytes
        byte[] fileBytes = new byte[fi.ContentLength];
        // fill the byte array
        using (System.IO.Stream stream = fi.InputStream)
        {
            stream.Read(fileBytes, 0, fi.ContentLength);
        }
        // insert the image
        DataAccess.InsertImage( fileBytes);
        // bind the image list    
        ListView1.DataSource = DataAccess.ListImages();
        DataBind();
        // clean up        
        fileBytes = null;
    } 
}

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.IO;
using System.Linq;
using System.Web;
public class DataAccess
{
    public DataAccess()
    {
    }
    public static byte[] GetImageByID(int ImageID)
    {
        string cnn = 
            ConfigurationManager.ConnectionStrings["MyConnectionString"].ConnectionString;
        using (SqlConnection connection = new SqlConnection(cnn))
        {
            using (SqlCommand command = new SqlCommand("dbo.up_GetImageByID", connection))
            {
                command.CommandType = CommandType.StoredProcedure;
                command.Parameters.Add(new SqlParameter("@ ID", ImageID));
                connection.Open();
                object result = command.ExecuteScalar();
                try
                {
                    return (byte[])result;
                }
                catch
                {
                    return null;
                }
            }
        }
    }
    public static void InsertImage(byte[] imageAsBytes)
    {
        string cnn = 
            ConfigurationManager.ConnectionStrings["MyConnectionString"].ConnectionString;
        using (SqlConnection connection = new SqlConnection(cnn))
        {
            using (SqlCommand command = new SqlCommand("dbo.up_InsertImage", connection))
            {
                command.CommandType = CommandType.StoredProcedure;               
                command.Parameters.Add(new SqlParameter("@ imageAsBytes", imageAsBytes)); 
                connection.Open();
                command.ExecuteNonQuery();
            }
        }
    }
    public static List<ImageData> ListImages()
    {
        string cnn = 
            ConfigurationManager.ConnectionStrings["MyConnectionString"].ConnectionString;
        using (SqlConnection connection = new SqlConnection(cnn))
        {
            using (SqlCommand command = new SqlCommand("dbo.up_ListImages", connection))
            {
                command.CommandType = CommandType.StoredProcedure;
                connection.Open();
                List<ImageData> list = new List<ImageData>();
                using (SqlDataReader reader = command.ExecuteReader())
                {
                    while (reader.Read())
                    {
                        ImageData item = new ImageData() 
                        { 
                            ID = (int)reader["ID"]
                                
                        };
                        list.Add(item);
                    }
                }
                return list;
            }
        }
    }
    public class ImageData
    {
        public int ID { get; set; }
        public ImageData() { }
    }
}

<%@ WebHandler Language="C#" Class="Thumbnail" %>
    using System;
    using System.Drawing;
    using System.Drawing.Drawing2D;
    using System.Drawing.Imaging;
    using System.IO;
    using System.Web;
    public class Thumbnail : IHttpHandler 
    {    
        public void ProcessRequest (HttpContext context) 
        {
            // Set up the response settings
            context.Response.ContentType = "image/jpeg";
            context.Response.Cache.SetCacheability(HttpCacheability.Public);
            context.Response.BufferOutput = false;
            if (!string.IsNullOrEmpty(context.Request.QueryString["ID"]))
            {
                // get the id for the image
                int id = Convert.ToInt32(context.Request.QueryString["ID"]);
                
                // get the image as a byte array
                byte[] imageAsBytes = DataAccess.GetImageByID(id);          
                // put the byte array into a stream
                Stream stream = new MemoryStream((byte[])imageAsBytes);
                
                // setup the chunking of the image data (good for large images)
                int buffersize = 1024 * 16;
                byte[] buffer = new byte[buffersize];
                
                // push the bytes to the output stream in chunks
                int count = stream.Read(buffer, 0, buffersize);
                while (count > 0)
                {
                    context.Response.OutputStream.Write(buffer, 0, count);
                    count = stream.Read(buffer, 0, buffersize);
                }
            }
        }
     
        public bool IsReusable 
        {
            get { return true; }
        }
       
    }