Question

I’ve installed EFv4.2 via Nuget but I still don’t see “DbContext generator” T4 template in EDMX model, only “Entity object generator” and “Self-tracking generator” are available. It seems that there is nothing changed.
Am I missing something ? Do I need to install EFv4.1 first ?

Answer 1

There are no new features. Only bug fixes.

EF 4.2 = Bug Fixes + Semantic Versioning

When we released ‘EF 4.1
Update 1’ we introduced a bug that affects third party EF providers
using a generic class for their provider factory implementation,
things such as WrappingProviderFactory. We missed this
during our testing and it was reported by some of our provider writers
after we had shipped. If you hit this bug you will get a
FileLoadException stating “The given assembly name or codebase was
invalid”. This bug is blocking some third party providers from working
with ‘EF 4.1 Update 1’ and the only workaround for folks using an
affected provider is to ask them to remain on EF 4.1. Third party
provider writers then identified some areas in EF where it was hard to
get EF to work with their providers, so we decided to address these
issues in the EF 4.2 release. These provider related changes will be
the only changes between ‘EF 4.1 Update 1’ and ‘EF 4.2’.

Obviously a single bug fix wouldn’t normally warrant bumping the minor
version, but we also wanted to take the opportunity to get onto the
semantic versioning path rather than calling the release ‘EF 4.1
Update 2’.

Extracted from ADO.NET Team Blog

Edit

The templates for using the DbContext API with Model First and
Database First are now available under the “Online Templates” tab when
“Right-Click –> Add Code Generation Item…” is selected on the EF
Designer.