Help with displaying partial column name from xml file in combobox using vb.net

Hi,

How do I modify the code below to only display the first 5 records in a table and also from the  to the 12th record. i need to display records in a combobox depending on which categories chosen.

 Private Sub Button8_Click(sender As System.Object, e As System.EventArgs) Handles Button8.Click
        Dim xmlPath1 As String
        Dim dtsetcol1 As New DataSet
        xmlPath1 = System.IO.Path.Combine(Application.StartupPath + "\MainTest.xml")  'grid1
        dtsetcol1.Clear()
        dtsetcol1.ReadXml(xmlPath1)
        Me.ComboBox3.DataSource = dtsetcol1.Tables(0).Columns(0).ColumnName
    End Sub

Thanks,

Victor