I know Visual Studio 2010 has a new Code Analysis tool built in, but that is only for the premium and ultimate editions. From what I can see the latest FxCop supports .NET 3.5 SP1. Searching I wasn't able to find any references to an FxCop for .NET 4.0. Is there plans to continue to offer FxCop and for it to support .NET 4.0? Where would I find more information about it and download it?
The latest version of FXCop (v10) is bundled with the install of the latest Windows SDK for Windows 7 and .Net 4, released on 5/19/2010. From Microsoft - Full ISOs
Once the SDK is installed you can find the FXCop installer EXE under %programfiles%\Microsoft SDKs\Windows\v7.1\Bin\FXCop (This assumes you kept the default install directory when installing the SDK).
Enjoy.
FxCop is now enhanced to work with .NET 4.0. You can find it here: http://blogs.msdn.com/b/codeanalysis/archive/2010/07/26/fxcop-10-0-is-available.aspx
New version is marked with 10.0 just like Visual Studio.
I googled for FXcop 4.0 and found the following a helpful links:
http://social.msdn.microsoft.com/Forums/en/vstscode/thread/74b2815a-626d-4aef-a08a-14c2fa72b506
Looks like its not yet out but FXCop support for .NET 4.0 is planned.
An alternative to FxCop rules would be to use the tool NDepend. This tool that lets write Code Rules over C# LINQ Queries what we call CQLinq, supports .NET v4 and v4.5, and is integrated in VS 2012, 2010, 2008. Disclaimer: I am one of the developers of the tool
More than 200 code rules are proposed by default. Customizing existing rules or creating your own rules is straightforward thanks to the C# LINQ syntax.
Rules can be verified live in Visual Studio and at Build Process time, in a generated HTML+javascript report.
来源：https://stackoverflow.com/questions/2740738/fxcop-for-net-4-0