HOW TO: List Members of a Distribution List by Using Outlook Object Model in Visual Basic .NET

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Create Sample to List the Members of a Distribution List Programmatically

1. Start Microsoft Visual Studio .NET.
2. On the File menu, point to New, and then click Project.
3. Click Visual Basic Projects under Project Types, and then click Console Application under Templates. By default, Module1.vb is created.
4. Add a reference to the Microsoft Outlook 10.0 Object Library. To do this, follow these steps:
   1. On the Project menu, click Add Reference.
   2. Click the COM tab.
   3. Click Microsoft Outlook 10.0 Object Library, and then click Select
   4. Click OK. If you are prompted to generate wrappers for the library that you selected, click Yes.
5. In the Code window, replace the default code with the following code:

   Imports System.Reflection
   
   Module Module1
   
       Sub Main()
           ' Create Outlook application.
           Dim oApp As Outlook.Application = New Outlook.Application()
   
           ' Get Mapi NameSpace and Logon.
           Dim oNS As Outlook.NameSpace = oApp.GetNamespace("mapi")
           oNS.Logon("YourValidProfile", Missing.Value, False, True) ' TODO:
         
           ' Get Global Address List.
           Dim oDLs As Outlook.AddressLists = oNS.AddressLists
           Dim oGal As Outlook.AddressList = oDLs.Item("Global Address List")
           Console.WriteLine(oGal.Name)
   
           ' Get a specific distribution list.
           ' TODO: Replace the distribution list with a distribution list that is available to you.
           Dim sDL As String = "TestDL"
           Dim oEntries As Outlook.AddressEntries = oGal.AddressEntries
           ' No filter available to AddressEntries
           Dim oDL As Outlook.AddressEntry = oEntries.Item(sDL)
   
           Console.WriteLine(oDL.Name)
           Console.WriteLine(oDL.Address)
           Console.WriteLine(oDL.Manager)
   
           ' Get all of the members of the distribution list.
           oEntries = oDL.Members
           Dim oEntry As Outlook.AddressEntry
           Dim i As Integer
   
           For i = 1 To oEntries.Count
               oEntry = oEntries.Item(i)
               Console.WriteLine(oEntry.Name)
   
               ' Display the Details dialog box.
               'oDL.Details(Missing.Value)
           Next
   
           ' Log off.
           oNS.Logoff()
   
           ' Clean up.
           oApp = Nothing
           oNS = Nothing
           oDLs = Nothing
           oGal = Nothing
           oEntries = Nothing
           oEntry = Nothing
       End Sub
   
   End Module
   					

6. Modify the code where you see the TODO comments.
7. Press F5 to build and to run the application.
8. Verify that the members of the distribution list are displayed.

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