Active Directory LDAP Query by sAMAccountName and Domain

Question

How do you do a query of an LDAP store by sAMAccountName and Domain? What is the "domain" property named in Active Directory or LDAP terms?

This is what I have for the filter so far. I'd like to be able to add in the domain:

(&(objectCategory=Person)(sAMAccountName=BTYNDALL))

Answer 1

First, modify your search filter to only look for users and not contacts:

(&(objectCategory=person)(objectClass=user)(sAMAccountName=BTYNDALL))

You can enumerate all of the domains of a forest by connecting to the configuration partition and enumerating all the entries in the partitions container. Sorry I don't have any C# code right now but here is some vbscript code I've used in the past:

Set objRootDSE = GetObject("LDAP://RootDSE")
AdComm.Properties("Sort on") = "name"
AdComm.CommandText = "<LDAP://cn=Partitions," & _
    objRootDSE.Get("ConfigurationNamingContext") & ">;" & _
        "(&(objectcategory=crossRef)(systemFlags=3));" & _
            "name,nCName,dnsRoot;onelevel"
set AdRs = AdComm.Execute

From that you can retrieve the name and dnsRoot of each partition:

AdRs.MoveFirst
With AdRs
  While Not .EOF
    dnsRoot = .Fields("dnsRoot")

    Set objOption = Document.createElement("OPTION")
    objOption.Text = dnsRoot(0)
    objOption.Value = "LDAP://" & dnsRoot(0) & "/" & .Fields("nCName").Value
    Domain.Add(objOption)
    .MoveNext 
  Wend 
End With