How To Upload And Retrieve Images From The Database

i am using sql server,asp.net and C# language.I am able to upload data into the database but couldnt retrieve it from the database.i am using the following code to upload image into the database.kindly help.

 

 SqlConnection connection = null;
         try
         {
             FileUpload img = (FileUpload)imgUpload;
             Byte[] imgByte = null;
             if (img.HasFile && img.PostedFile != null)
             {
                 HttpPostedFile File = imgUpload.PostedFile;
                 imgByte = new Byte[File.ContentLength];
                 File.InputStream.Read(imgByte, 0, File.ContentLength);
             }
             string conn = connection establishing string;
             connection = new SqlConnection(conn);
             connection.Open();
             string sql = "insert into imagetable values(@enm, @eimg) SELECT @@IDENTITY";
             SqlCommand cmd = new SqlCommand(sql, connection);
             cmd.Parameters.AddWithValue("@enm", txtEName.Text.Trim());
             cmd.Parameters.AddWithValue("@eimg", imgByte);
             int id = Convert.ToInt32(cmd.ExecuteScalar());
             lblResult.Text = String.Format("Employee ID is {0}", id);
         }
         catch
         {
             lblResult.Text = "There was an error";
         }
        finally
        {
            connection.Close();
        }