How do I disable all Roslyn Code Analyzers?

Question

I'm trying to work with a large opensource project that has a handful of Roslyn Code Analyzers. When I open the solution Visual Studio uses ~35% CPU for about 15 minutes. Using PerfView I've figured out that the code analyzers being run on the solution are bogging down Visual Studio.

I know it's possible to disable analyzers on a per-project basis but this solution contains over 100 projects so I'd rather not do this one-by-one.

My question(s):

• Can I disable all Roslyn Analyzers for a given solution to avoid this?
• Can I disable all Roslyn Analyzers for all solutions in Visual Studio?

Answer 1

You can disable analyzers on a per-project basis.

To do it, right click on Project>References>Analyzers in the Solution Explorer and hit Open Active Rule Set

You can disable individual analyzers or entire bundles of analyzers.

This creates a <ProjectName>.ruleset file and modifies the <ProjectName>.csproj, which means that you will share this configuration with your team unless you exclude these changes from source control.

Note: Changes are applied after you close and re-open the solution.

---

Changes to the .csproj:

<Project ...>   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">     <CodeAnalysisRuleSet>Example.ruleset</CodeAnalysisRuleSet> 

Example.ruleset file:

<?xml version="1.0" encoding="utf-8"?> <RuleSet Name="Rules for WpfApplication1" Description="Code analysis rules for WpfApplication1.csproj." ToolsVersion="14.0">   <Rules AnalyzerId="Microsoft.CodeAnalysis.CSharp" RuleNamespace="Microsoft.CodeAnalysis.CSharp">     <Rule Id="AD0001" Action="None" />     <Rule Id="CS0028" Action="None" /> ...