Revisited: Enum values as bit flags - using FlagsAttribute
In one of my earlier posts about enum bit flags, using the FlagsAttribute, I incorrectly stated that the actual enum values did not have to be specified. Due to the comments on the post, I ran another test, this time a more conclusive one! See the C# code for this test below.
using
System;
public class Test
{
[Flags]
public enum DodgyCarOptions
{
NoExtras,
AirCo,
TintedWindows,
Leather,
SunRoof
}
[Flags]
public enum CarOptions
{
NoExtras=0,
AirCo=1,
TintedWindows=2,
Leather=4,
SunRoof=8
}
public static void Main(string[] args)
{
DodgyCarOptions myoptions = DodgyCarOptions.AirCo | DodgyCarOptions.TintedWindows; // 01 | 10
Console.WriteLine("Test DodgyOptions:\t"+((myoptions==DodgyCarOptions.Leather)?"Airco + Tinted Windows = Leather! Oops!":"Well...not that you'll ever see this..")); // 01 | 10 == 11 !!!
CarOptions myoptions2 = CarOptions.AirCo | CarOptions.TintedWindows; // 01 | 10
Console.WriteLine("Test Options:\t\t"+((myoptions2==CarOptions.Leather)?"Airco + Tinted Windows = Leather! Oops!":"Of course these values aren't equal.")); // 01 | 10 == 11 != 100;
}
}
Apologies for the mistake - and happy coding!