MEF Experiments

A few quick demo projects showing Dependency injection, run-time dynamic plugins, and code hot-swapping using MEF. http://msdn.microsoft.com/en-us/library/dd460648(v=vs.110).aspx

• Plugin watcher

  A utility class to watch folders for changing plugins of a specific type

• Simple plugin and IoC demo

  Shows basic use of contract interfaces, plugin implementations, unit testing and a simple composed application to bring it all together.

  • DemoApp
  • DemoApp.Contracts
  • DemoApp.Unit.Tests
  • DemoAppPlugins

• Live plugin updates

  Using the PluginWatcher to add and remove implementations at run time

  • PluginWatcher.App
  • PluginWatcher.Contracts
  • WatcherPlugin_A

• Hot code-swap

  Showing a simple way to update an implementation at run time, using the PluginWatcher

  • HotSwap.Contracts -- basic upgrade contract and a sample task for the demo
  • HotSwap.Greeting.V1 -- first version, configured at startup
  • HotSwap.Greeting.V2 -- second version. Drop it's .dll file in the running HotSwapDemo.App's bin/Plugins folder to see an upgrade happen
  • HotSwapDemo.App -- an application that does a simple hot code swap