MSBuild: Treat single warning as error

Question

Is there a way to force MSBuild to treat a certain warning as an error?

When running the Publish target for a ccproj file to make a cspkg for deploy

Answer 1

In MSBuild you can use the /warnaserror command line switch

  /warnaserror[:code[;code2]]
                     List of warning codes to treats as errors.  Use a semicolon
                     or a comma to separate multiple warning codes. To treat all
                     warnings as errors use the switch with no values.
                     (Short form: /err[:c;[c2]])

                     Example:
                       /warnaserror:MSB4130

                     When a warning is treated as an error the target will
                     continue to execute as if it was a warning but the overall
                     build will fail.

This is equivalent to setting the property in the project file (docs).

For completeness, the C# compiler also has the -warnaserror command line option (docs).