using System;

​

[Flags]

enum Colours

{

    Red, Blue, Green

}

​

var colours = Colours.Red | Colours.Blue;

​

Console.WriteLine("Has Red: " + colours.HasFlag(Colours.Red) + "\tHas Blue: " + colours.HasFlag(Colours.Blue) + "\tHas Green:" + colours.HasFlag(Colours.Green));

​

colours &= ~Colours.Blue;

colours &= ~Colours.Green;

​

Console.WriteLine("Has Red: " + colours.HasFlag(Colours.Red) + "\tHas Blue: " + colours.HasFlag(Colours.Blue) + "\tHas Green:" + colours.HasFlag(Colours.Green));

​

colours |= Colours.Red;

colours |= Colours.Blue;

colours |= Colours.Green;

​

Console.WriteLine("Has Red: " + colours.HasFlag(Colours.Red) + "\tHas Blue: " + colours.HasFlag(Colours.Blue) + "\tHas Green:" + colours.HasFlag(Colours.Green));