Show the Member Count of a Distribution List

A distribution list's member count is limited. But how do you know how many members are already on a list? The following lines of code will tell you.

  How to add macros to Outlook

Public Sub ShowMemberCount()
  Dim obj As Object
  Dim DL As Outlook.DistListItem

  If TypeOf Application.ActiveWindow Is Outlook.Explorer Then
    If Application.ActiveExplorer.Selection.Count Then
      Set obj = Application.ActiveExplorer.Selection(1)
    End If
  Else
    Set obj = Application.ActiveInspector.CurrentItem
  End If

  If Not obj Is Nothing Then
    If TypeOf obj Is Outlook.DistListItem Then
      Set DL = obj
      MsgBox "Name: " & DL.DLName & _
        vbCrLf & "Member: " & DL.MemberCount, _
        , "Member Count"
    End If
  End If
End Sub