How to view data from a table with multiple rows

I am using the code below to view countries in a table. How do I modify the code to use a next button to see all the countries in the table? The code below only displays the first record.

For Each xnDonor As Xml.XmlNode In xdDonor.SelectNodes("/Root/CountryTable[Country_ID='" & DonorID & "']")
                DonorID2 = xnDonor.SelectSingleNode("Country_ID").InnerText
                Name = xnDonor.SelectSingleNode("Country").InnerText
                dtDonor.Rows.Add({DonorID2, Name})
            Next
C1CountryOrigin.Text = dtDonor.Rows(0).Item("Country")
 
Thanks,

Victor