DirectoryServicesPermissionAccess
The DirectoryServicesPermissionAccess enumeration defines access levels that are used by DirectoryServices permission classes. This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.
Browse = 2
Reading the Active Directory Domain Services tree is allowed.
None = 0
No permissions are allowed.
Write = 6
Reading, writing, deleting, changing, and adding to the Active Directory Domain Services tree are allowed.