Methods exposed to Windows Runtime must return only Windows Runtime types.

I’m getting a

'AlarmClock.ParameterController.GetWithSimpleParameters(System.Int32, System.String)' returns 'Devkoes.Restup.WebServer.Models.Schemas.GetResponse', which is not a valid Windows Runtime type.  Methods exposed to Windows Runtime must return only Windows Runtime types.

when following the REST tutorial in the wiki. I’m also using a headless app and getting the same results when trying the example provided in the repo.

[Jark]

Closed due to #46

[Jark]

Hello Jan,

Thanks, that did help me with pinpointing what’s going on.

I think (don’t know for sure since I haven’t read up on the uwp compiler model) that all types exported in windows uwp “apps” have to be sealed.

Why the sample app works is because it has got the controllers in a separate library, and this library is referenced by the sample app. Once the sample app is compiled all the library’s types are made sealed (if you’re not overriding them).

What this means:

• If you want to use restup now you will have to use a separate library project and reference the controllers from that library in the headless app, or override the GetResponse class and make that class sealed
• the response classes in restup will need to be made sealed to prevent this from happening. I probably will have some time to do this this weekend, but pull requests are also always welcome 😃

I want to apologise for suggesting that your setup was wrong, and thank you for following this through!

Cheers,

Jark