Ask HN: Looking for C# dev stack advice

I have some C# enterprise type work coming up and am looking for advice or links to good information about what a great C# stack looks like. Specifically I'm wondering what good options are for unit testing, mocking, building, database connectivity, and dev libraries and frameworks.

I have a lot of experience with enterprise Java, for comparison here is what my answer would be for it:

Testing: JUnit, Hamcrest, Mockito Database: Mybatis, Mybatis Migrations Build: Maven or Gradle Libraries/Frameworks: Guava, Guice, HttpClient, Jersey or Stripes, log4j, Apache Commons

Thanks!