Find all source hardcoded strings

ReSharper 5 is obvious a choice, but many tips must be set so as to achieve your goals,

1. Turn on solution wide analysis.
2. Go to ReSharper|Options|Code Inspection|Inspection Severity|Potential Code Quality Issues|Element is localizable set to Show as error.
3. Go back to Solution Explorer and click on the project (csproj).
4. In Properties panel under ReSharper category, set Localizable to Yes, Localizable Inspector to Pessimistic.

Then you can find almost all you need in Errors in Solution panel.

Hope this helps.