DataContract, default DataMember value

Question

Is there a way to choose default values of attributes that are not in the xml file during deserialization?
If the mAge attribute is not present in the xml file,

Answer 1

This should work.

[DataContract]
 public class Person 
  {
    public Person ()
    {
    }
    [DataMember(Name = "Name")]
    public string mName { get; set; }
    [DataMember(Name = "Age")]
    public int mAge = 18;
    [DataMember(Name = "Single")]
    public bool mIsSingle { get; set; }
  };

Take a look at this page.