How to make a value type nullable with .NET XmlSerializer?

Question

Let\'s suppose I have this object:

[Serializable]
public class MyClass
{
    public int Age { get; set; }
    public int MyClassB { get; set; }
}
[Serializab         


        

Answer 1

You can use XmlElementAttribute.IsNullable:

[Serializable]
public class MyClass
{
    [XmlElement(IsNullable = true)]
    public int? Age { get; set; }

    public int MyClassB { get; set; }
}