Selecting image from database after user login

<%@ WebHandler Language="C#" Class="PhotoHandler" %>

using System;

using System.Web;

public class PhotoHandler : IHttpHandler {

public void ProcessRequest (HttpContext context)

{

{

System.Data.SqlClient.SqlDataReader rdr = null;

System.Data.SqlClient.SqlConnection conn = null;

System.Data.SqlClient.SqlCommand selcmd = null;

try

{

conn = new System.Data.SqlClient.SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["studentConnectionString"].ConnectionString);

selcmd = new System.Data.SqlClient.SqlCommand("select Image from User_Table where id=" + context.Request.QueryString["imgID"], conn);

conn.Open();

rdr = selcmd.ExecuteReader();

while (rdr.Read())

{

context.Response.ContentType = "image/jpg";

context.Response.BinaryWrite((byte[])rdr["Image"]);

}

if (rdr != null)

rdr.Close();

}

finally

{

if (conn != null)

conn.Close();

}

}

}

public bool IsReusable

{

get

{

return false;

}

}

}