Create .dll file for c++ (opencv project)

hi guys, there is a work for you. what you have to do is create .dll file for c++ and opencv project. after creating that .dll you should use that .dll file for implementing c# project.(that is only for testing purpose. you have freedom to create simple project for c#). for this you have to knowledge about c++,c# and opencv. if you have knowledge about emgucv that may be added advantage. you should take only ONE HOUR to complete this. regards