Create a modular Silverlight application structure

The aim is to implement the basic functionalities for a modular business application that will be extended later (server-side business logic, modules). In this project, no effort is required to give the application a nice design. Each time a database access is needed, it will be simulated with fake hard-coded data. We will plug our database and business logic there ourselves. ## Deliverables The needed functionalities are: Authentication process * A login/password entry whose validity is checked on the server using a custom authentication. <!-- --> * RIA Authentication Service feels a good solution, please argument if you don't think so. See: [login to view URL] <!-- --> * An anonymous access must remain possible. <!-- --> * The user can also authenticate itself in a standard ASP.NET page, the identified user has to be transferred to the Silverlight application. Create a form to illustrate that. <!-- --> * Authentication through SSL must be possible, please detail the procedure to activate it. Module downloading * According to the current user (identified or anonymous), a list of authorized modules is provided by the server and downloaded. <!-- --> * Each module is a separate XAP and conforms to a common C# interface <!-- --> * The browser cache must be caching modules. Loading an already used module should not call the server. <!-- --> * When a module is updated on the server, it is downloaded again and replaces the existing version in cache. <!-- --> * The downloading progress is reflected in the user interface: current module name and downloaded bytes / total bytes. <!-- --> * A good source of inspiration: [login to view URL] Interaction with modules * A menu (any UI will do) is presented with the available modules <!-- --> * Each module main window is instantiated on demand, when the module is first selected <!-- --> * Switching to another module keeps the former in memory <!-- --> * A module window can be unloaded explicitly (for example a close button), and reloaded on next selection in the menu. Technology: ASP.NET, C# 4.0, Silverlight 4.0