One reason a developer would use a technology like MEF is to, as the name implies, make an application extensible through a process called discovery. Discovery is simply a method for locating classes, types, or other resources in an assembly. MEF uses the Export tag to flag items for discovery, and the composition process then aggregates those ...

I started a project to update my personal website using Silverlight. The goal is to use Prism/Composite Application Guidance to build out a nice site that demonstrates some Silverlight capabilities and make the source code available as a reference. One of the first pieces I chose to tackle was ensuring I could facilitate deep linking using ...

For all of the Prism fans out there, a newer version has been released. You can download it here.

A common user interface component is the confirmation or message box, which is often presented as a dialog returns a boolean (OK/Cancel). There are a variety of ways to achieve this, but how can you decouple the implementation of the popup from the request itself? This is necessary, for example, for unit testing when you may not have a UI ...

Thanks to those of you who read my Twist on the Observer pattern and gave me the feedback. You said, ''Hey, Jeremy, that's neat, but there is already a pattern established for what you're talking about, and a few great solutions ready to use. Besides, they are much, much more powerful...'' Thanks to Microsoft MVP Jason Rainwater for taking the ...