What would be the fastest way to concatenate three files in C#?

Question

I need to concatenate 3 files using C#. A header file, content, and a footer file, but I want to do this as cool as it can be done.

Cool = really small code or reall

Answer 1

You mean 3 text files?? Does the result need to be a file again?

How about something like:

string contents1 = File.ReadAllText(filename1);
string contents2 = File.ReadAllText(filename2);
string contents3 = File.ReadAllText(filename3);

File.WriteAllText(outputFileName, contents1 + contents2 + contents3);

Of course, with a StringBuilder and a bit of extra smarts, you could easily extend that to handle any number of input files :-)

Cheers