Trying to load a ComboBox using a DataTable?

I have a simple procedure in which I'm trying to assign a DataSource to a ComboBox DataSource. When I look at how many rows were added to the DataSource, the count is correct, however, when I go to select an entry from the ComboBox, all the entry values are "System.Data.DataRowView". Not sure what is causing this. Here is my code:

    Private Sub LoadNewUsersComboBox()
        Try
            Dim tbl As New DataTable
            Dim row As DataRow

            tbl.Columns.Add("commonName")
            tbl.Columns.Add("SAMAccountName")

            For x As Integer = 0 To arrStcLDAP.Count - 1
                row = tbl.NewRow
                row("commonName") = arrStcLDAP(x).commonName
                row("SAMAccountName") = arrStcLDAP(x).samAcctName
                tbl.Rows.Add(row)
            Next

            cmbUserName.DataSource = Nothing
            cmbUserName.DisplayMember = tbl.Columns(0).ColumnName.ToString
            cmbUserName.ValueMember = tbl.Columns(1).ColumnName.ToString
            cmbUserName.DataSource = tbl
            cmbUserName.SelectedIndex = -1

        Catch ex As Exception
            EH.ErrorMessage = "LoadNewUsersComboBox() - " & ex.Message & "~E"
        End Try

        EH.ProcessMessages(Me, sbr, EH.ErrorMessage)
    End Sub

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