Update Configuration.md

[mayermart]

I think $(MSBuildThisFileDirectory) can be used to simplify the .props file

[codecov]

Codecov Report

Merging #3251 (94b6d26) into master (aa26bda) will increase coverage by 0.00%.
The diff coverage is n/a.

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##           master    #3251   +/-   ##
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  Coverage   94.39%   94.40%           
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  Files         967      967           
  Lines      108429   108429           
  Branches     3675     3675           
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+ Hits       102356   102358    +2     
+ Misses       5143     5142    -1     
+ Partials      930      929    -1     

[sharwell]

💭 This seems fine, but I'm not one of the users of this configuration form. It would be good to get a review from one of the original contributors of this section.

/cc @ngeor

[ngeor]

Hi, I haven't worked with .NET pretty much since I did this contribution more than 2 years ago :-(

The configuration sample was about having an external NuGet package ( MyCompany.MyRules.nuget ) that holds StyleCop configuration, so I can share it in multiple projects without copy pasting around the config file.

If this "MSBuildThisFileDirectory" variable somehow points to a NuGet package, go ahead with the changes. If your change is actually in a different direction (copy pasting the stylecop file rules in multiple projects), I think then you should add it to the docs as a new section.

[mayermart]

The Documentation includes a hint which covers this scenario:

Tip: You can specify a relative path in a targets file that's relative to the targets file and not relative to the original project file.

The NuGet Package i created this way works at least with PackageReference in old-style and sdk-style Projects