Visual Studio 2012 constantly complaining that a file has been modified outside of the source editor

Question

I am working on a parser, using the parser generator ANTLR in Visual Studio. Naturally, ANTLR is continually regenerating certain files. Every single time it does this, VS has a popup saying:

The file has been modified outside of the source editor.
Do you want to reload it?

The answer I want is always Yes to All.

Is there any way to tell Visual Studioto always assume I want to reload auto-generated files, without prompting?

Answer 1

Click Tools then options then under the environment node on the left choose documents then check the box that says Auto-load changes, if saved: