How do I alter code at compile time based on a flag in C#

Question

I want to set up a debug flag such that would replace "Console".Writeline with "Log".WriteLine. I don't want to write

if (debug)
    Log.writeline("log");
else 
    Console.Writeline("log"); every time I want to log info.

Something like INFO.Writelline("log"); where INFO could be replaced by "Log" or "Console" depending a global variable set.
Would have used conditional Macro but C# does not support that. Please let me know if I am missing something.

Answer 1

Something like this?

#define MY_DEBUG //Note: this must be the first line in the file

public static class INFO
{
    public static void WriteLine(string message)
    {
         #if (MY_DEBUG)
             Log.writeline(message);
         #else
             Console.Writeline(message);
         #endif
    }
}

And you would just call

INFO.WriteLine("log message");