How to find the function call chain

I want to find the call chain of each method in the given project cs files. I made a parser to do that. But it is taking so much of time. I think that by adding a class in the project, and using reflection I may get the call chain. There are functions to extract methods for a class. But how can I get the calls inside the method. How to use reflection for it. Or is it not possible using reflection? Than how to find the calling methods inside the function apart from parsing?