[SerializableAttribute()] 
public class PaymentCollection : System.Collections.ObjectModel.Collection<Payment> 

class MyPage : System.Web.UI.Page
{
    public String GetPaymentData() 
    {
        System.Text.StringBuilder payStr = new System.Text.StringBuilder();

        payStr.Append("<table>");

        PaymentCollection payments = Payment.getPaymethods();
        foreach( Payment pay in payments )
        {
            String checkedStr = "";
 
            if( pay.CountryRelation(countryID).IsDefault )
                checkedStr = "CHECKED";
            else
                checkedStr = "";
 
	           payStr.Append("<tr>");
            payStr.Append("<td><input type=""radio"" value=""" + pay.ID + """ " + checkedStr + ">" + pay.Name + " - " + pay.Description + "</td>");
            payStr.Append("</tr>");
        }

        payStr.Append("</table>")

        return payStr.ToString();
    }
}