public class NamingRulesChecker
    {
        private const string PrivateConst = " ";
        private static readonly double PrivateStaticReadonlyLikeConstant = TimeSpan.FromSeconds(3).Ticks;
        private static readonly string[] _privateStaticReadonlyOthers = new[] { "None" };

        private static string _privateStatic = "";

        public const string PublicConst = "";
        public static string PublicStatic = "";

        private string _privateInstance;
        public string PublicInstance;

        // protected fields should not be used

        private void Member(string paraMeter)
        {
            const string LocalConst = "";

            var localVar = paraMeter;
            _privateStatic = string.Empty;

            LocalFunction();

            void LocalFunction()
            {
                _privateInstance = LocalConst;
            }
        }
    }