adsi ldap stuff.ps1

# directoryentry (connect to specific dc:port)
$de = ([ADSI]"LDAP://$($ADDomainController.HostName):$($ADDomainController.LdapPort)")

# directorysearcher
$ds = New-Object System.DirectoryServices.DirectorySearcher($de,"(objectclass=user)")
$ds.PageSize=1000

# invoke
$ds.FindAll() | %{"do stuff with $_"}
$thisuser = $ds.FindOne()
$thisuserde = $thisuser.GetDirectoryEntry()

# Invoke get property
($([ADSI]"LDAP://$($adsiref.distinguishedName)").Invoke("get","name"))

# example get pwdlastset from user directoryentry
[datetime]::FromFileTime($thisuserde.ConvertLargeIntegerToInt64($thisuserde.pwdLastSet[0]))

# example get pwdlastset from user searchresult
[datetime]::FromFileTime($($thisuser.Properties["pwdlastset"]))

# List RootDSE DirectoryEntry properties
[ADSI]"LDAP://RootDSE" | fl *

# Get configurationNamingContext 
([ADSI]"LDAP://RootDSE").configurationNamingContext
([ADSI]"LDAP://RootDSE").get("configurationNamingContext")