Is it possible with the principalsearcher to create a "OR" queryfilter
I want to search for users containing a searchstring in either the DisplayName or the UserPrincipalName property but when I try I only get results where the searchstring appears in both properties.
Dim domainContext As New PrincipalContext(ContextType.Domain)
Dim up As UserPrincipal = New UserPrincipal(domainContext)
up.DisplayName = "*" & searchString & "*"
up.UserPrincipalName = "*" & searchString & "*"
Dim searcher As PrincipalSearcher = New PrincipalSearcher(up)
Dim results As PrincipalSearchResult(Of Principal) = searcher.FindAll
For Each result As UserPrincipal In results