How to Create Microsoft Project Plan From My C# Application

Revision 3
Hi
I want to include Microsoft Project Plan in my C# application for adding task and resources , i need help how to develop this functionality?

i visited below link but not much help:-
http://www.add-in-express.com/creating-addins-blog/2010/10/07/office-project-2010-addins/

Hope now this is helpful to understand