Investigations: How to identify current path in referenced library in MVC application?

Following is the exact scenario in my application:

1) MVC application is referencing one DLL (a Class library project).

2) some code in the class library need to access folders and files from the MVC application.

Say, there is one folder named as "Templates" in root of my MVC application.

How should I able to get the path of that folder in context of execution path from any method of the class library.

If I try "~\templates" or "\templates", it looks for folder in C:\Program Files\... instead of the websites folder.

If I try "templates", it looks for folder in C:\ only.

any idea of how to achieve this

http://forums.asp.net/t/1860362.aspx/1?How+to+identify+current+path+in+such+scenario+see+question+