How do you pass multiple enum values in C#?

Question

Sometimes when reading others\' C# code I see a method that will accept multiple enum values in a single parameter. I always thought it was kind of neat, but never looked in

Answer 1

I second Reed's answer. However, when creating the enum, you must specify the values for each enum member so it makes a sort of bit field. For example:

[Flags]
public enum DaysOfWeek
{
    Sunday = 1,
    Monday = 2,
    Tuesday = 4,
    Wednesday = 8,
    Thursday = 16,
    Friday = 32,
    Saturday = 64,

    None = 0,
    All = Weekdays | Weekend,
    Weekdays = Monday | Tuesday | Wednesday | Thursday | Friday,
    Weekend = Sunday | Saturday,
    // etc.
}