I'd like to provide some way of creating dynamically loadable plugins in my software. Typical way to do this is using the LoadLibrary WinAPI function to load a dll and calling GetProcAddress to get an pointer to a function inside that dll.
My question is how do I dynamically load a plugin in C#/.Net application?
As of .NET 3.5 there's a formalized, baked-in way to create and load plugins from a .NET application. It's all in the System.AddIn namespace. For more information you can check out this article on MSDN: Add-ins and Extensibility