Example

using System;

namespace Samples
{
  public class FlagsAttributeSample
  {
    [Flags]
    enum DayOfWeek {Sunday = 0x1, Monday = 0x2,
                    Tuesday = 0x4, Wednesday = 0x8,
                    Thursday = 0x10, Friday = 0x20,
                    Saturday = 0x40};
    public static void Main()
    {
      DayOfWeek weekDays = DayOfWeek.Monday |
                           DayOfWeek.Tuesday |
                           DayOfWeek.Wednesday |
                           DayOfWeek.Thursday |
                           DayOfWeek.Friday;
      Console.WriteLine("Week days: {0}", weekDays);
      DayOfWeek weekendDays = DayOfWeek.Sunday |
                              DayOfWeek.Saturday;
      Console.WriteLine("Weekend days: {0}", weekendDays);
    }
  }
}
The output is
Week days: Monday, Tuesday, Wednesday, Thursday, Friday
Weekend days: Sunday, Saturday

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