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How to do it...

Add a new project to your Visual Studio solution and click on Extensibility and select the Analyzer with Code Fix (NuGet + VSIX) template. Give it a suitable name and click on OK to create the Analyzer project.

You will see that Visual Studio has created three projects for you: Portable, .Test and .Vsix . Ensure that the .Vsix project is set as the default startup project.

In the Portable class, take a look at the DiagnosticAnalyzer.cs file. You will see a method called AnalyzeSymbol(). All that this code analyzer does ...

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