How can I get the name of the calling function in C#?

Question

I need to get the name of the calling function in C#. I read about stackframe method but everywhere its said its not reliable and hurts the performance.

But I need i

Answer 1

upgrade to c# 5 and use CallerMemberName

public void Method([CallerMemberName] string caller="")
{
}

EDIT

Other nice things with c# 5

public void Method([CallerMemberName] string name="",
                   [CallerLineNumber] int line=-1,
                   [CallerFilePath] string path="")
{
}