enumeration specifies the search options which define how the search will behave. SearchOption
Member name Description DomainScope Prevents referrals from being generated when the search results are returned. The value is equal to 1. PhantomRoot Instructs the server to search all naming contexts that are subordinate to the search base. The value is equal to 2. .NET Framework
Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0
.NET Framework Client Profile
Supported in: 4
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.