Method Diagram in C#

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C#

Hi,
C# provides "class diagram" that help us to monitor important informations about a class. It pays attention too much about classes and types, but it does not help user to see which function calls another function. I need a tool to help me know which functions are orphan in my program, which of them are called just by one other function and how to displace my functions to make program more legible.
I have searched and found two suggested applications:
1- FxCop
2- ReSharper
Can these applications help me? Which of them are better?
Does anyone have any experiences of such a solution?

Thx

Mark Nischalke wrote:

AFAIK there are no tools that will tell you about orphaned methods.

But I think it is too necessary to be ignored by VS.