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Get computer properties from Active Directory

Posted on 2010-11-19
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Last Modified: 2012-05-10
I am new to Active Directory programming and need some help. I am writing a program that connects to AD and adds all computers to a listbox.

Now I need to now how to get the selected computers information from AD. Specifically I am looking to retrieve the information in the Operating System tab of the properties (i.e. OS Name, Version and Service Pack.)


Any samples and help would be appreciated.
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Question by:T-Cornett
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7 Comments
 
LVL 74

Assisted Solution

by:Glen Knight
Glen Knight earned 50 total points
ID: 34174979
Active Directory doesn't held this information.

You could use DSQuery to get a list of computers from AD but you would then need to do a WMI call on each individual computer to get this information from the computer itself.

The best way would be to run a collector on the client that sends this information to a central database.
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LVL 27

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by:KenMcF
KenMcF earned 50 total points
ID: 34175002
You will need to pull these attributes from AD.

operatingSystem
operatingSystemVersion
operatingSystemServicePack
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LVL 5

Assisted Solution

by:CAGdorf
CAGdorf earned 50 total points
ID: 34175004
You can use remote scanning tools as well. We use Spiceworks its free and lets you report off that information as well.
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LVL 74

Expert Comment

by:Glen Knight
ID: 34175088
I stand corrected, thanks KenMcF.

However, I stand by the rest of my post ;)
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LVL 27

Expert Comment

by:KenMcF
ID: 34175130
demazter, I agree with WMI, i think it would give you more accurate information. In AD the data could be stale and computers may not be active anymore. It all depends on the size of the AD env and the cleanup process.
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Accepted Solution

by:
T-Cornett earned 0 total points
ID: 34175681
Thanks for the information. I know WMI will work but since I am trying to learn AD programming I needed an AD solution.

I figured it out though. Here are the two functions I pieced together from code I found online get the OS information. Most of the code I found was for getting user properties but I managed to get it to work for computer properties.

Thanks


Public Function GetComputerOS(ByVal sPC As String, ByVal sDomain As String) As String

        Dim adEntry As New System.DirectoryServices.DirectoryEntry("LDAP://" & sDomain)
        Dim adSearcher As New System.DirectoryServices.DirectorySearcher(adEntry)
        Dim adSearcherResult As System.DirectoryServices.SearchResult
        Dim adResultEntry As System.DirectoryServices.DirectoryEntry

        adSearcher.Filter = "(&(objectClass=computer) (cn=" + sPC + "))"

        Try

            adSearcherResult = adSearcher.FindOne

            adResultEntry = adSearcherResult.GetDirectoryEntry()

            GetComputerOS = getProperty(adResultEntry, "operatingSystem", "Not Found")

        Catch e As Exception
            MsgBox(e.ToString)
            GetComputerOS = "Not Found"
        End Try

    End Function

Private Function getProperty(ByVal adEntry As DirectoryEntry, ByVal sProperty As String, ByVal sReturnFailed As String) As String

        Try
            If adEntry.Properties(sProperty).Value.ToString().Trim() = "" Then
                Return sReturnFailed
            Else
                Return adEntry.Properties(sProperty).Value.ToString()
            End If

        Catch
            Return sReturnFailed
        End Try

    End Function

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Author Closing Comment

by:T-Cornett
ID: 34203735
I am awarding each of you 50 points for trying to help me.
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