I have a function which return a List, and I'm trying to add users to
it from 3 different roles, but I don't want duplicate user names.  The
"Contains" ALWAYS is returning FALSE, so I'm not finding the dupe.
Here's the code:

Dim datalist As New List(Of TroubleTicketUser)
Dim str As String
Dim theroles(2) As String, therole As String

theroles(0) = "IT User"
theroles(1) = "IT Admin"
theroles(2) = "Customer Service Rep"

For Each therole In theroles
    For Each str In Roles.GetUsersInRole(therole)
        Dim tt As New TroubleTicketUser(str)
        If Not datalist.Contains(tt) Then datalist.Add(tt)
    Next
Next

datalist.Sort()

Return datalist

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Why doesn't the Contains work?