From Bytes to actual Image displayed on page

[ASPNETnewbie]

I have the code below for a handler. basically what I am trying to do is have the handler extract byte array information saved in Session variable. Process it and then output an image on my page when I set the imageURL of my ImageControl to the address of the handler. Is this not supposed to work? Or does a handler work another way? Is there a better way to get Bytes to display as an image on my .ASPX page?

<%@ WebHandler Language="VB" Class="ShipLabel" %>

Imports System
Imports System.Web

Public Class ShipLabel : Implements IHttpHandler
    
    Public Sub ProcessRequest(ByVal ctx As HttpContext) Implements IHttpHandler.ProcessRequest

        Dim chartID As String = ctx.Request.QueryString(0)

        ctx.ClearError()
        ctx.Response.Expires = 0
        ctx.Response.Buffer = True
        ctx.Response.Clear()

        Dim memStream As MemoryStream = New MemoryStream(DirectCast(ctx.Session(chartID), Byte()))
        memStream.WriteTo(ctx.Response.OutputStream)
        memStream.Close()

        ctx.Response.ContentType = "image/Jpeg"
        ctx.Response.StatusCode = 200
        ctx.Response.End()

    End Sub

    Public ReadOnly Property IsReusable() As Boolean Implements IHttpHandler.IsReusable
        Get
            Return False
        End Get
    End Property

End Class

thanks in Advance

AspNET