How do you handle multiple web.config files for multiple environments?
Transforms seem really helpful for this. You can replace certain sections with different rules.
http://msdn.microsoft.com/en-us/library/dd465318(v=vs.100).aspx
The way we've been doing it is to override the AppSettings section:
<appSettings file="../AppSettingsOverride.config"> <add key="key" value="override" /> ...</appSettings>This only works for the appSettings section and so is only useful to a degree. I'd be very interested in more robust solutions.
Edit Below
Just watched this:http://channel9.msdn.com/shows/10-4/10-4-Episode-10-Making-Web-Deployment-Easier/
VS2010 has config transforms which look pretty awesome, should make multiple configurations a complete breeze.