Re: using .aspx page to output image problem

From: Karl (_at_)
Date: 08/27/04 

Date: Fri, 27 Aug 2004 18:51:10 -0400

Holly,
I admitedly don't know the full picture (no pun intended), but it seems to
me you could rearchitect things to make a lot more sense and probably avoid
this problem. The thing that sticks out the most is: Why is page A calling
the webservice as opposed to MapOutput.aspx ???

It also seems to me that you are using a session simply to communicate
between page (A) and MapOutput.aspx - which is a poor way to communicate
between a page and a user control.

I would create an address class (hopefully you already have one)

public class Address
  pirvate street as string
  private zip as string
  ...
 public property ....
end class

I would create a custom server control which inherits from ImageButton and
exposes a property of type Address

public class MapPointImage
  inherits ImageButton

  private _address as Address
  public property Address() as Address
    get
           return _address
    end get
   set (value as Address)
         _address = value
   end set
  end property

and would implement the Webservice code in the render method of this class.

You can then create the address object in page A and set it to the Address
property of yourMapPointImage reference.

Karl

"Holly" <holly.li@dtag.com> wrote in message
news:19c201c48c79$57b15f30$a501280a@phx.gbl...
> Hi,
> I have a page (A) that allows users to enter addresses
> and displays direction information and map images.
> The page A calls Microsoft's mappoint web service, gets
> the route info and map image. Page A contains an image
> button with the image url set as MapOutput.aspx
> <asp:imagebutton id="ibtnMap" runat="server"
> ImageUrl="MapOutput.aspx"></asp:imagebutton>
>
> After page A got the image, it stores the image into
> session. In MapOutput page, it gets the image out from
> session and output the image through Response object.
>
> The map works fine on a single web server setup. The
> image wouldn't show up on a load balanced web server
> setup (consists of two web servers). Sticky session is
> working since it is also used in other places.
>
> Does anyone have ideas?
>
> Thanks.
>
> Holly Li
>