| re: "cannot serialize interface" error in web service, help please
Hi,
I don't think that you can serialize an interface. Here are some ideas for solving it:
1. Replace the interface with a base class. Obviously, this won't work if you need to inherit from other classes.
2. I have no idea if this will work, but:
Have the webmethod return an object (that implements your interface).
Make sure that the client app has a reference to the same interface. You probably need to have the interface in a separate dll that
both client and server has access to.
In the client, just cast the returned object to your interface.
--
Robert Jeppesen
robert.jeppesen%at%durius-dot-se
"n_o_s_p_a__m" <n_o_s_p_a__m@mail.com> wrote in message news:1faa8782.0310080835.4713b002@posting.google.c om...[color=blue]
> My web service has a webmethod whose return type is declared as an
> interface type, for example:
>
> [WebMethod()]
> public IBusinessProcess GetBusinessProcess() {}
>
> which generates the lovely error:
>
> Cannot serialize interface IBusinessProcess
>
> The returned object (which implements IBusinessProcess), however, is
> marked Serializable; but I gather that doesn't matter and that this is
> some limitation in web services (because of marshalling)?
>
> Please let me know what's up here. Thanks in advance.
>
> -NS[/color]
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