C# Constants:

private const uint CREATE_NEW    = 1;
private const uint CREATE_ALWAYS     = 2;
private const uint OPEN_EXISTING     = 3;
private const uint OPEN_ALWAYS       = 4;
private const uint TRUNCATE_EXISTING = 5;

private const uint FILE_FLAG_WRITE_THROUGH       = 0x80000000;
private const uint FILE_FLAG_OVERLAPPED      = 0x40000000;
private const uint FILE_FLAG_NO_BUFFERING    = 0x20000000;
private const uint FILE_FLAG_RANDOM_ACCESS       = 0x10000000;
private const uint FILE_FLAG_SEQUENTIAL_SCAN     = 0x08000000;
private const uint FILE_FLAG_DELETE_ON_CLOSE     = 0x04000000;
private const uint FILE_FLAG_BACKUP_SEMANTICS    = 0x02000000;
private const uint FILE_FLAG_POSIX_SEMANTICS     = 0x01000000;
private const uint FILE_FLAG_OPEN_REPARSE_POINT  = 0x00200000;
private const uint FILE_FLAG_OPEN_NO_RECALL      = 0x00100000;
private const uint FILE_FLAG_FIRST_PIPE_INSTANCE = 0x00080000;

private const uint SECURITY_ANONYMOUS      = ((uint)SECURITY_IMPERSONATION_LEVEL.SecurityAnonymous      << 16);
private const uint SECURITY_IDENTIFICATION = ((uint)SECURITY_IMPERSONATION_LEVEL.SecurityIdentification << 16);
private const uint SECURITY_IMPERSONATION  = ((uint)SECURITY_IMPERSONATION_LEVEL.SecurityImpersonation  << 16);
private const uint SECURITY_DELEGATION     = ((uint)SECURITY_IMPERSONATION_LEVEL.SecurityDelegation     << 16);

VB Constants:

TODO

Notes:

None.