vb.net and ldap queries

Greetings!  I am looking for a way to query LDAP from vb.net with a textfile list of usernames and pull back attributes from that list in ldap.  For instance, I have a list of 20 users and I would like to pull back their email address in ldap.  Best scenario for me is I load the list to a listbox, click a query button and return both the ID and the email in another listbox.  Any ideas?  I have googled this and searched this site and haven't come up with much.
derek7467Asked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Chris DentPowerShell DeveloperCommented:
You could read the file into an ArrayList using System.IO.FileStream with StreamReader (which exposes a ReadLine method). Populate the drop down list from that on load or on file selection.

The best way to implement the searcher component goes something like this (my VB.NET is very rusty):
Dim de as new DirectoryEntry()
Dim LdapFilter as String = "(sAMAccountName=" & DropDownList.Text & ")"
Dim searcher as New DirectorySearcher(de, DropDownList.Text)
Dim result as SearchResult = searcher.FindOne()
EmailBox.Text = result.Properties("mail")(0).ToString()

Open in new window

Tie that to your button click and it "should" work. I suspect you'll need to pay some attention to error handling, especially for searches that fail.

Chris
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
derek7467Author Commented:
Thanks chris. Emailbox.text could theoretically be list view that adds all returned values there?
0
Chris DentPowerShell DeveloperCommented:
Yes, the searcher component will return the e-mail address for any account you feed into it. There's not a whole lot you can do to optimise it further if you have a random selection of accounts you want that for.

Chris
0
Ultimate Tool Kit for Technology Solution Provider

Broken down into practical pointers and step-by-step instructions, the IT Service Excellence Tool Kit delivers expert advice for technology solution providers. Get your free copy now.

derek7467Author Commented:
ok ill try this on Tuesday when I get back into the office (didn't bring my laptop home, doh..)
0
derek7467Author Commented:
So i rewrote your code to the below and it works when i select a userID in the listbox.  How do i make this loop through each record in the listbox and pull back the display name and add it to the listbox2 i have listed below?

       Dim de As New DirectoryEntry("LDAP://test.com/DC=test,DC=com")
        Dim LdapFilter As String = "(sAMAccountName=" & ListBox1.Text & ")"
        Dim searcher As New DirectorySearcher(de, LdapFilter)
        Dim result As SearchResult = searcher.FindOne()
        ListBox2.Items.Add(result.Properties("displayName")(0).ToString())

Open in new window

0
Chris DentPowerShell DeveloperCommented:
Perhaps make that section into a method? Then all you need is a foreach loop and a call to that method?

Chris
0
derek7467Author Commented:
Im not that great with For Each, can you help?  I tried the below and cant get it to loop through each listbox entry:

 
 Dim de As New DirectoryEntry("LDAP://test.com:389/DC=test,DC=com")
        Dim LdapFilter As String = "(sAMAccountName=" & ListBox1.Text & ")"
        Dim searcher As New DirectorySearcher(de, LdapFilter)
        Dim result As SearchResult = searcher.FindOne()
        ListBox2.Items.Add(result.Properties("displayName")(0).ToString())
        For i As Integer = 0 To ListBox1.Items.Count - 1
            Dim ADEntry As DirectoryEntry = New DirectoryEntry(result.Path)
            If result.Properties("displayName") Is Nothing Then
                Return
            End If
        Next

Open in new window



Im assuming ihave to change the .text in this string:
Dim LdapFilter As String = "(sAMAccountName=" & ListBox1.Text & ")"
to something like:

Dim LdapFilter As String = "(sAMAccountName=" & ListBox1.items & ")"
That doesnt work, it underlines and says i cant use that with an "&"
0
derek7467Author Commented:
got it:

   For Each i As String In ListBox1.Items
            Dim de As New DirectoryEntry("LDAP://test.com/DC=test,DC=com")
            Dim LdapFilter As String = "(sAMAccountName=" & i & ")"
            Dim searcher As New DirectorySearcher(de, LdapFilter)
            Dim result As SearchResult = searcher.FindOne()
            ListBox2.Items.Add(result.Properties("displayName")(0).ToString())
            ListBox2.Items.Add(result.Properties("title")(0).ToString())
            Dim ADEntry As DirectoryEntry = New DirectoryEntry(result.Path)
            If result.Properties("displayName") Is Nothing Then
                On Error Resume Next
            End If
        Next

Open in new window

0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Visual Basic.NET

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.