C#中的位字段

[Flags]
public enum FileAttributes
{
    None = 0,
    ReadOnly = 1,
    Hidden = 2,
    System = 4,
    Directory = 16,
    Archive = 32,
    Device = 64,
    Normal = 128,
    Temporary = 256,
    SparseFile = 512,
    ReparsePoint = 1024,
    Compressed = 2048,
    Offline = 4096,
    NotContentIndexed = 8192,
    Encrypted = 16384,
    IntegrityStream = 32768,
    NoScrubData = 65536
}

FileAttributes attributes = FileAttributes.ReadOnly | FileAttributes.Hidden;

if ((attributes & FileAttributes.ReadOnly) == FileAttributes.ReadOnly &&
    (attributes & FileAttributes.Hidden) == FileAttributes.Hidden)
{
    Console.WriteLine("File is read-only and hidden.");
}