Can't suppress CA1502

Question

I have a class which starts off something like this:

namespace Tools.Builders
{
    internal abstract class Builder
    {
        [SuppressMessage("Microsoft.Maintainability", "CA1502")]
        private static readonly Dictionary<string, Func<ILogger, Builder>> _builders =
            new Dictionary<string, Func<ILogger, Builder>>
        {
            { "1", (x) => {return new BuilderType1(x);} },
            { "2", (x) => {return new BuilderType2(x);} },
            { "3", (x) => {return new BuilderType3(x);} },
            { "4", (x) => {return new BuilderType4(x);} },
            { "5", (x) => {return new BuilderType5(x);} },
            { "6", (x) => {return new BuilderType6(x);} },
            { "7", (x) => {return new BuilderType7(x);} },
            { "8", (x) => {return new BuilderType8(x);} },
            { "9", (x) => {return new BuilderType9(x);} },
        };
        protected ILogger _logger;
        protected Builder(ILogger logger)
        {
            _logger = logger;
        }
        //...

This causes a CA1502 warning of the form "Builder.Builder() has a cyclomatic complexity of..." (which is a known problem with this sort of initialiser). However my problem is I can't suppress the warning. I've tried putting the SuppressMessageAttribute in all sorts of different places in the code, but it just gets ignored. Any suggestions anyone?

Answer 1

I was able to suppress this message by using an assembly-level attribute that specifies the constructor as the target:

using System.Diagnostics.CodeAnalysis;

[assembly: SuppressMessage("Microsoft.Maintainability",
                           "CA1502:AvoidExcessiveComplexity",
                           Scope = "member",
                           Target = "Tools.Builders.Builder.#.cctor()")]

This attribute can be placed in any code file in the assembly.

For future reference, I generated this attribute by right-clicking the CA warning in the Error List window (or the Code Analysis window in VS2013 and earlier) and selecting Suppress -> In Suppression File.