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visual-studio-2010stylecop

Why is StyleCop SA1305 not respecting the allowed prefixes list in VS2010 (or MSBuild)?

I just upgraded a project from 2008 to 2010 Beta 2 and StyleCop is now reporting SA1305 (Hungarian notation) warnings on variable names with the prefix 'is'. 'Is' is definitely in the list of allowed prefixes.

Is this a known issue? Has anyone else run across this problem? The code was definitely compiling without any warnings in 2008.

Update: It turns out that this can work as expected in Visual Studio, but then fail through MSBuild. See the answer below for why.

Solution

  • I ran across a similar issue now when building with msbuild vs on a developer box. It turns out that the default Settings.StyleCop (C:\Program Files (x86)\MSBuild\Microsoft\StyleCop\v4.4) that is installed actually contains a bunch of values you will need to duplicate in your own file if either:

    • you are not installing StyleCop on the "other" (build) machine

    or

    • you have "do not merge with any other settings files" enabled

    Specifically - the StyleCop Settings Editor picks up the Hungarian notation excludes from the other file automatically, regardless of what the "Settings Files" tab says.