Enumerations - Illustrated C# 2005 - page 303

Example Using Bit Flags
The following code puts together all the pieces of using bit flags:
[Flags]
enum CardDeckSettings : uint {
SingleDeck = 0x01, // Bit 0
LargePictures = 0x02, // Bit 1
FancyNumbers = 0x04, // Bit 2
Animation = 0x08 // Bit 3
}
class MyClass {
bool UseSingleDeck = false, UseBigPics = false,
UseFancyNums = false, UseAnimation = false;
public void SetOptions2(CardDeckSettings ops) {
UseSingleDeck = (ops & CardDeckSettings.SingleDeck)
== CardDeckSettings.SingleDeck;
UseBigPics = (ops & CardDeckSettings.LargePictures)
== CardDeckSettings.LargePictures;
UseFancyNums = (ops & CardDeckSettings.FancyNumbers)
== CardDeckSettings.FancyNumbers;
UseAnimation = (ops & CardDeckSettings.Animation)
== CardDeckSettings.Animation;
}
public void PrintOptions() {
Console.WriteLine("Option settings:");
Console.WriteLine(" Use Single Deck - {0}", UseSingleDeck);
Console.WriteLine(" Use Large Pictures - {0}", UseBigPics);
Console.WriteLine(" Use Fancy Numbers - {0}", UseFancyNums);
Console.WriteLine(" Show Animation - {0}", UseAnimation);
}
}
class Program {
static void Main() {
MyClass mc = new MyClass();
CardDeckSettings ops = CardDeckSettings.SingleDeck
| CardDeckSettings.FancyNumbers
| CardDeckSettings.Animation;
mc.SetOptions2(ops);
mc.PrintOptions();
}
}