Question

I’m considering the scenario where an MVC view would pass the model to a Silverlight application (to display preferably as a modal form), which in turn would send back the updated model to the view before submitting. Is this at all possible?

Answer 1

To talk from Asp.net to silverlight you can use params:
See this or this

I don’t think the Silverlight control/app should be posting the page (causing a refresh/reload) Silverlight is perfect for a nice async experience. But anyway, you could maybe invoke a Javascript function from silverlight and then in your JS do a postback. See this

I would recommend something like WCF Data Services, It allows you to expose any IQueryable objects through a service, then you can use Linq to consume it and entity objects are automatically created in visual studio so that you can update or delete objects if you’re exposing a database.

You could maybe send something like user ID (model Id) from asp.net to silverlight with a param, then silverlight can call a wcf data service to pull the actual user. After processing it can then push/edit/delete that object again through the WCF data service. You can get up to speed with WCF quickly.

Hope that was helpful!?