No answer...
Let me describe what I am doing. I've created these classes:
[XmlInclude(typeof(Car))]
[XmlInclude(typeof(Motorcycle))]
public class Vehicle
{
public Vehicle() {}
public string Make;
public string Model;
public int Year;
}
public class Car : Vehicle
{
public Car() {}
public string VIN;
}
public class Motorcycle : Vehicle
{
public Motorcycle() {}
}
public class ParkingLot
{
public ParkingLot()
{
ParkedVehicles = new ArrayList();
ParkedVehicles.Add(new Car());
ParkedVehicles.Add(new Motorcycle());
}
[XmlElement(ElementName="ParkedCar",Type=typeof(Car ))]
[XmlElement(ElementName="ParkedMotorcycle",Type=typ eof(Motorcycle))]
public ArrayList ParkedVehicles;
}
Serializing a ParkingLot creates this (which is just what I want):
<?xml version="1.0" encoding="utf-8"?>
<ParkingLot xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<ParkedCar>
<Year>0</Year>
</ParkedCar>
<ParkedMotorcycle>
<Year>0</Year>
</ParkedMotorcycle>
</ParkingLot>
As you can see there is no parent element around parked car and parked
motorcycle, i.e. no ParkedVehicles element.
Now, I would like to have a collection of ParkingLot's inside another
class. So I add this:
public ArrayList ParkingLotCollection;
to my other class. Trying to serialize produces an exception:
Message: The type LX.ParkingLot was not expected. Use the XmlInclude or
SoapInclude attribute to specify types that are not known statically.
So I rewrite it like this:
[XmlArrayItem(Type=typeof(ParkingLot))]
public ArrayList ParkingLotCollection;
But this creates a parent element around my ParkingLot's, like this:
<ParkingLotCollection>
<ParkingLot>
<ParkedCar>
<Year>0</Year>
</ParkedCar>
<ParkedMotorcycle>
<Year>0</Year>
</ParkedMotorcycle>
</ParkingLot>
</ParkingLotCollection>
From what I've read I should be able to remove this parent element by
adding a empty XmlElement attribute to my ArrayList ParkingLotCollection:
[XmlArrayItem(Type=typeof(ParkingLot))]
[XmlElement]
public ArrayList ParkingLotCollection;
But this causes an exception:
Message: There was an error reflecting field 'ParkingLotCollection'.
I have no idea what to do. What am I doing wrong? Any information is very
much appreciated. Thanks.
--
Daniel
