How do I load a module catalog from a database in Prism?

I'm using Prism in my WPF application and up to now, I've been loading the modules via 开发者_运维百科var moduleCatalog = new ConfigurationModuleCatalog();. I'd like to get the module catalog from a database. The Prism documentation indicates that this is possible, but it doesn't go into any details.

Has anyone done this and can provide some guidance?

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This is a theoretical possibility, but it's not in any samples I've seen.

Basically what you'd do is either base64 encode the DLLs / Files into the database or zip them up and store them in one blob. You'd download them in your bootstrapper and copy them locally (in a temp directory) and then allows them to load normally from the filesystem using the DirectoryModuleCatalog. If you wanted it to be a bit more elegant, you could write your own ModuleCatalog that encapsulates this logic.

This is very similar to what I do... I actually download a zip file of all of the modules from a website at launch time and unzip them and load them with the DirectoryModuleCatalog.

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You can write your own ModuleCatalog implementation by implementing IModuleCatalog. Your implementation can then populate the catalog by any means you define.

You could also use the CreateFromXAML overload that accepts a Stream and implement a webservice that delivers the ModuleCatalog in XAML over HTTP.