[SerializableAttribute()] 
public class OrderCaptureInfo 

class MyPage : System.Web.UI.Page
{
   public Dynamicweb.eCommerce.Orders.OrderCaptureInfo Capture(Dynamicweb.eCommerce.Orders.Order order)
   {
       try
       {
           if (order == null || string.IsNullOrEmpty(order.ID) || string.IsNullOrEmpty(order.TransactionNumber))
           {
               string errorText = null;
               if (string.IsNullOrEmpty(order.TransactionNumber))
               {
                   errorText = "No transaction number set on the order";
               }
               else
               {
                   errorText = "No valid Order object set";
               }
               return new Dynamicweb.eCommerce.Orders.OrderCaptureInfo(Dynamicweb.eCommerce.Orders.OrderCaptureInfo.OrderCaptureState.Failed, errorText);
           }
           string infoText = "Remote Capture succeeded";
           return new Dynamicweb.eCommerce.Orders.OrderCaptureInfo(Dynamicweb.eCommerce.Orders.OrderCaptureInfo.OrderCaptureState.Success, infoText);
       }
       catch (Exception ex)
       {
           string infoTxt = string.Format("Remote capture for order {0} failed with the message: {1}", order.ID, ex.Message);
           return new Dynamicweb.eCommerce.Orders.OrderCaptureInfo(Dynamicweb.eCommerce.Orders.OrderCaptureInfo.OrderCaptureState.Failed, infoTxt);
       }
   }
}