How can you automate Firefox from C# application?

Question

Start with the simplest task of capturing the URL in Firefox from a C# application. It appears using user32.dll Windows API functions will not work as is the approach for c

Answer 1

It appears to be very beta-ey, but someone built a .net connector for mozrepl. Actually, the mozrepl codebase just moved to github. But mozrepl lets you issue commands to the Firefox's XUL environment.