Using PrincipalSearcher to find users with “or” parameters

Question

Is it possible to use System.DirectoryServices.AccountManagement.PrincipalSearcher to search based on multiple parameters using \"or\" (not \"and\").

i.

Answer 1

PrincipalContext pContext = new PrincipalContext(ContextType.Machine, Environment.MachineName);
GroupPrincipal gp = GroupPrincipal.FindByIdentity(pContext, "Administrators");
bool isMember = UserPrincipal.Current.IsMemberOf(gp);