#191 – Changing the Underlying Type of an enum

When you declare an enum, by default each enumerated value is represented internally with an int.  (System.Int32 – 4 bytes).  But you can use any of the following types: byte, sbyte, short, ushort, uint, long, or ulong.

        public enum Mood { Crabby, Happy, Petulant, Elated };   // type is int

        public enum MoodByte : byte { Crabby, Happy, Petulant, Elated };

        static void Main()
        {
            // 4 bytes
            Console.WriteLine("Each element is {0} bytes", sizeof(Mood));

            // 1 byte
            Console.WriteLine("Each element is {0} bytes", sizeof(MoodByte));
        }
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About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

One Response to #191 – Changing the Underlying Type of an enum

  1. Peter Chamberlin says:

    Typo: “// 4 bytets” → ‘bytes’

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