Retrieving image from database

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C#

ASP.NET

I have Image control,Database containing id,name and image.,and i hve created a handler name picview.ashx.Picview.ashx loads images from database but only first image in column is displayed.In ashx file if i write where clause and give a specific Id then another image is displayed.i want to display image according to the id which is holded by cookie.*how to do retrieve value of cookie in select statement on ashx file??*so that it can display images according to id.
picview code is as follows:-
<%@ WebHandler Language="C#" Class="picview" %>

using System;
using System.Web;
using System.Data.SqlClient;

public class picview : IHttpHandler {
    
    public void ProcessRequest (HttpContext context) {
        context.Response.ContentType = "image/jpeg";

        int id = Convert.ToInt32(context.Request.QueryString["ImageID"]);

        string cmdText = "SELECT Pic FROM Profile";//here i want to retrieve cookie value.
        string myConnection = "Data Source=AOD257;Initial Catalog=EduSocial;User Id=sa;Password=password";
        SqlConnection connection = new SqlConnection(myConnection);
        SqlCommand command = new SqlCommand(cmdText, connection);
        connection.Open();

        SqlDataReader reader = command.ExecuteReader();
        reader.Read();
        byte[] image = (byte[])reader[0];
        context.Response.BinaryWrite(image);
        reader.Close();
        connection.Close();
       
    }
 
    public bool IsReusable {
        get {
            return true;
        }
    }

}

Code behind page

private void GetImageFromDatabase(int ID)
   {
       Image1.ImageUrl = "picview.ashx"+ID.ToString();
   }