XmlSerializer Attributes

Code with Metadata Attributes

XML format

[XmlRoot( ElementName=”Automobile”,

    Namespace=”urn:my-ns”,

    IsNullable=”true”))]

public class Car {

…

 }

<Automobile xmlns=”urn:my-ns”>

…

</Automobile>

public class Car {

   [XmlElement(ElementName=”CarMake”,
  Namespace=”urn:my-ns”,

  IsNullable=”true”]

   public string Make;

…

 }

<Car>

  <CarMake xmlns=”urn:my-ns”></CarMake>

…

</Car>

or if Make = null

<Car>

  <CarMake xsi:nil=”true” />

</Car>

Public class ParkingLot {
  [XmlElement]

  public Car[] Cars;

  public Car[] MoreCars;

}

<ParkingLot>

  <! -- no parent for the array elements - ->

  <Car></Car>

  <! - - enclosing element for the array elements - - >

  <MoreCars>

    <Car></Car>

    <Car></Car>

  </MoreCars>

</ParkingLot>

public class Car {

  [XmlAttribute(

    AttributeName=”CarMake”,

    Namespace=”urn:my-ns”)]

  public string Make;

… }

<Car n1:CarMake=”” xmlns:p1=”urn:my-ns”>

…

</Car>

public class Car {

   [XmlIgnore]

   public string Make

… }

<Car>

…

</Car>

public class Car {

  public string Make = “Ford”;

  [XmlText]

  public string Desc = “sedan”;

}

<Car>

<Make>Ford</Make>

sedan

</Car>

public class ParkingLot {

  [XmlArray(

    ElementName=”ParkedCars”,
    Namespace=”urn:my-ns”,

    IsNullable=”true”)]

  public Car[] Cars;

}

<ParkingLot>

  <ParkedCars xmlns=”urn:my-ns”>

    <Car>…</Car>

    <Car xsi:nil=”true” />

  </ParkedCars>

</ParkingLot>

public class ParkingLot {

  [XmlArrayItem(

    ElementName=”ParkedCar”,
    Namespace=”urn:my-ns”,

    IsNullable=”true”)]

  public Car[] Cars;

… }

<ParkingLot>

  <Cars>

    <ParkedCar><ParkedCar>

    <ParkedCar xsi:nil=”true”/>

  </Cars>

</ParkingLot>

public enum Makes {

  [XmlEnum(“FCar”)]

  Ford,

  Toyota

}

public class Car {

   public Makes Make;

}

If Make == Makes.Ford :

<Car>
  <Make>FCar</Make>

</Car>

If Make == Makes.Toyota :

<Car>
  <Make>Toyota</Make>

</Car>

public class Car

{

  [XmlAnyElement]

  XmlElement[] extraElements;

}

extraElements contains 2 nodes: Color and Wheels:

<Car>

   <Color>Red</Color>
   <Wheels>Alloy</Wheels>
</Car>

public class Car

{

  [XmlAnyAttribute]

  XmlAttribute[] extraAttribs;

}

ExtraAttribs contains 2 attributes: vin and miles

<Car vin=”12335” miles=”123”>
</Car>

public class Car

{

  [DefaultValueAttribute(“Ford”)]

  public string Make;

…

}

If Make == “Ford”:

<Car>

  <!- -  default has to be derived from the schema -->

</Car>

Otherwise:

<Car>

  <Make>Toyota</Make>

</Car>

public class Car {

  [XmlNamespaceDeclarations]

  public XmlSerializerNamespaces

    namespaces;

…

}

namespaces maps the prefix c to “urn:christoph-cars”

<Car

  xmlns:c ="urn:christoph-cars">

…

</Car>

[XmlType(

  TypeName="Car_T",

  Namespace="urn:christoph-car")]

public class Car

{

  public string Make;

}

<Car_T>

  <Make xmlns="urn:christoph-car">

  </Make>

</Car_T>