Enum.cs

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using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
 
namespace AnalyzeRe.Utilities
{
    public static class Enum<T> where T : struct, IComparable, IFormattable, IConvertible
    {
        private static readonly Lazy<ReadOnlyCollection<T>> CachedValues = new Lazy<ReadOnlyCollection<T>>(() =>
            new ReadOnlyCollection<T>(Enum.GetValues(typeof(T)).Cast<T>().ToList()));
 
        public static IEnumerable<T> Values => CachedValues.Value;
 
        private static readonly Lazy<ReadOnlyCollection<string>> CachedNames = new Lazy<ReadOnlyCollection<string>>(() =>
            new ReadOnlyCollection<string>(Enum.GetNames(typeof(T)).ToList()));
 
        public static IEnumerable<string> Names => CachedNames.Value;
 
        private static readonly Lazy<Dictionary<string, T>> CachedParsingDict = new Lazy<Dictionary<string, T>>(() =>
            Names.ToDictionary(x => x, x => (T)Enum.Parse(typeof(T), x), StringComparer.OrdinalIgnoreCase));
 
        public static T Parse(string value) => CachedParsingDict.Value[value];
 
        public static bool TryParse(string value, out T result) => CachedParsingDict.Value.TryGetValue(value, out result);
 
        private static readonly Lazy<Dictionary<T, string>> CachedGetNameDict = new Lazy<Dictionary<T, string>>(() =>
            Values.ToDictionary(v => v, v => Enum.GetName(typeof(T), v)));
 
        public static string GetName(T value) => CachedGetNameDict.Value[value];
    }
}