Do __LINE__ __FILE__ equivalents exist in C#?

Question

For logging purposes

__LINE__ 
__FILE__ 

were my friends in C/C++. In Java to get that information I had to throw an exception and catch

Answer 1

The closest thing to those is the fact that you can create a StackTrace object and find out the name of the method at the top of the stack, so you can get close to the functionality of the __FUNCTION__ macro.

StackTrace stackTrace = new StackTrace();           
StackFrame[] stackFrames = stackTrace.GetFrames();  

foreach (StackFrame stackFrame in stackFrames)
    Console.WriteLine(stackFrame.GetMethod().Name);   

To reduce the cost of typing this out by hand, and also the runtime code, you can write a helper method:

[Conditional("Debug")]
public void LogMethodName()
{
    Trace.WriteLine("Entering:" + new StackTrace().GetFrame(1).GetMethod().Name);
}

Note how we get frame 1, as frame 0 would be LogMethodName itself. By marking it as Conditional("Debug") we ensure that the code is removed from release builds, which is one way to avoid the runtime cost where it may not be needed.