How to execute all methods from classes that implements same interface?

See more:

C#

ASP.NET

MVC4

hello friends ,

i want to finds all classes that implements same interface,
and executes methods within that class.

Explanation:

1) add solution in vs 2010
2) add class library project ,with in that add one interface say "IClass"
3) add 2 different project(say project1,project2) in the solution, each one contain one class that implements "IClass" interface.
4) Important note no reference of these 2 project will be added to our mvc project which will be added in next step.

5) add MVC Project and write code that find all the classes from solution which implements "IClass" interface and execute methods within that

Note:
(only Reference of Interface project is given to each project)

thanks in advance