I have a function called RegisterXX. Its called from a bunch of places. I
need to know the method name that is calling my RegisterXX

for example given the following code:

public void MyFunctionA
{
   //... do something
   RegisterXX();
}

public void MyFunctionB
{
   //... do something
   RegisterXX();
}

I'm trying to hook up some instrumentation code in RegisterXX and want to be
able to pull the caller's name out of the air so I don't have to rely on
developers hooking things up correctly.

public void RegisterXX( EventTypeEnum eventType )
{
   string s_MethodName = GetCallingMethodName();
   WriteOutInstrumentation( s_MethodName, eventType );
)

so when MyFunctionA calls the RegisterXX method some instrumentation data is
written with the name "MyFunctionA".

I'm trying to be extremely clear here. I just need to know how to find the
calling method.