Enums

• ❌ AVOID converting enums to string.

  Calling Enum.ToString in .NET is very costly, as reflection is used internally for the conversion and calling a virtual method on struct causes boxing. As much as possible, this should be avoided.

  Oftentimes, enums can actually be replaced by const strings:

  // In both cases, you can use Numbers.One, Numbers.Two, ...
  public enum Numbers
  {
      One,
      Two,
      Three
  }
  
  public static class Numbers
  {
      public const string One = "One";
      public const string Two = "Two";
      public const string Three = "Three";
  }
  

  If you really need an enum, then consider using enumeration classes .

Learn More#

• Performance best practices in C#