System.Security.Principal (mscorlib.dll)enum
public enum WindowsBuiltInRole {
   Administrator = 544,User = 545,Guest = 546,PowerUser = 547,AccountOperator = 548,
      SystemOperator = 549, PrintOperator = 550,BackupOperator = 551,Replicator = 552

The WindowsBuiltInRole enumeration contains values used in one of the overloaded WindowsPrincipal.IsInRole( ) methods. Its values represent commonly used Windows user groups that are present in most Windows NT, Windows 2000, and Windows XP installations, and avoid the need to specify string values for the group names. It is apparent from the names of the member values which Windows group they represent, with the exception of SystemOperator, which represents the Windows Server Operators group.


System.Object System.ValueType System.Enum(System.IComparable, System.IFormattable, System.IConvertible) WindowsBuiltInRole

Passed To

WindowsPrincipal.IsInRole( )

    Part V: API Quick Reference