ENUMs

Using bitwise enums:

[Flags]

enum Color : long {

    Black=0,

    Red=1,

    Green=2,

    Blue=4,

    Orange = Red | Green,

    White = Red |Green | Blue

}

Test 1.

for (int i = 0; i < 8; i++) {

    Color myC = (Color)i;

    Console.WriteLine(myC);

    System.Diagnostics.Trace.WriteLine(myC); // write to "Output" window

}

Console.ReadKey();

gives result

Black

Red

Green

Orange

Blue

Red, Blue

Green, Blue

White

Test 2.

foreach (String c in Enum.GetNames(typeof(Color)))

{

    Console.WriteLine("{0}={1}", c, Convert.ToInt64((Color)Enum.Parse(typeof(Color),c)));

}

Console.ReadKey();

gives result

Black=0

Red=1

Green=2

Orange=3

Blue=4

White=7