问题
Having Visual Studio 2010 SP1, where everything is fine, I can create Silverlight Unit Test Project, RIA Services Class Library, etc I installed Visual Studio 2012, then I'm creating a RIA Services Class Library when I noticed that don't exist 'Domain Service Class', neither Silverlight Unit Test. What I need to develop RIA Services with Visual Studio 2012?
回答1:
The Tools for Silverlight 5 get installed with Visual Studio 2012. May be you need to reinstalled the Tools for Silverlight 4 again.
You can check if your installation of Visual Studio 2012 supports Silverlight 4 by creating a new Silverlight Application project. In the dialog that pops up you can select (ComboBox) the Silverlight Version you want to use in your project.
See also this post for further reference.
来源：https://stackoverflow.com/questions/14603952/ria-servicesilverlight-4-tools-in-visual-studio-2012