Mirroring console output to a file

You could subclass the TextWriter class, and then assign its instance to the Console.Out using the Console.SetOut method - which in particular does the same thing as passing the same string to both methods in the log method.

Another way might declaring your own Console class and use the using statement to distinguish between the classes:

using Console = My.Very.Own.Little.Console;

To access the standard console you'd then need:

global::Console.Whatever