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Editorial Team
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Asked: 2026-05-19T09:55:03+00:00

I’m sure there must be a simple answer for this but I can’t figure

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I’m sure there must be a simple answer for this but I can’t figure it out –

I have a Silverlight 4 OOB application that requires a login screen/security. The View shows a LoginView (Username/pw) which then passes the details to a WCF service and checks it against a database. It will return a result to the client to say if their details were valid or not. This part works fine.

Where I need some guidance is the best way of storing the fact that the user is logged on/authenticated for the current Silverlight session.

It’s OOB so we can’t use any web cookies/session stuff as far as I know. I assume we have to store some sort of Identity in the thread but I need some pointers please.

The other caveat is that I would like to secure all other pages to check if the user is authenticated and redirect to the login screen if not. I use the Navigation framework so I have a Frame – this may make it easier…

Any tips or pointers appreciated – I just need some ideas to get started please.

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1 Answer

  1. Editorial Team

    Just store the fact that the user is authenticated anywhere you like – I tend to like the Application object since it’s an app-wide setting, but you can stick your “IsAuthenticaed” and/or “Roles” properties anywhere, really.

    Take a look at WCF RIA Services – even if you don’t want to use their solution, you can take a look at the generated authentication code it makes and see a good real-world example of how this can all work.

    As for redirecting if the user is not logged in, I suggest using an INavigationContentLoader on your Frame, which can implement this logic in a central location. See these two excellent posts by David Poll on the subject of INavigationContentLoader and authentication/authorization:

    http://www.davidpoll.com/2010/01/01/opening-up-silverlight-4-navigation-authenticationauthorization-in-an-inavigationcontentloader/

    http://www.davidpoll.com/2010/05/10/common-navigation-ui-and-authorization-driven-sitemaps/

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