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VS 2010 total - 1 records are showing using OleDbDataReader pls help

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total - 1 records are showing using OleDbDataReader pls help
my code is
Code:

Dim i As Integer = 0
            Acc_Sql = "select sdo from comp1"
            Conn_Acc.Open()
            Dim my_cmd As OleDbCommand = New OleDbCommand(Acc_Sql, Conn_Acc)
            Dim re As OleDbDataReader = my_cmd.ExecuteReader()
            re.Read()
            For Each rec In re
                val(i) = re.Item("SDO").ToString
                ListBox1.Items.Add(val(i))
            Next
            Conn_Acc.Close()


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