EKS EKS - 11 months ago 35
C# Question

List all computers in active directory

Im wondering how to get a list of all computers / machines / pc from active directory?

(Trying to make this page a search engine bait, will reply myself. If someone has a better reply il accept that )

Answer Source

If you have a very big domain, or your domain has limits configured on how how many items can be returned per search, you might have to use paging.

public static List<string> GetComputers()
    List<string> ComputerNames = new List<string>();

    DirectoryEntry entry = new DirectoryEntry("LDAP://YourActiveDirectoryDomain.no");
    DirectorySearcher mySearcher = new DirectorySearcher(entry);
    mySearcher.Filter = ("(objectClass=computer)");
    mySearcher.SizeLimit = int.MaxValue;
    mySearcher.PageSize = int.MaxValue;

    foreach(SearchResult resEnt in mySearcher.FindAll())
        string ComputerName = resEnt.GetDirectoryEntry().Name;
        if (ComputerName.StartsWith("CN="))
            ComputerName = ComputerName.Remove(0,"CN=".Length);


    return ComputerNames;