Linq To XML把对象数组写入xml

enum ParticipantTypes 
{ 
    Author = 0, 
    Editor 
} 
 
class BookParticipant 
{ 
    public string FirstName; 
    public string LastName; 
    public ParticipantTypes ParticipantType; 
} 
 
BookParticipant[] bookParticipants = new[] { 
  new BookParticipant {FirstName = "Joe", LastName = "Rattz", 
                       ParticipantType = ParticipantTypes.Author}, 
  new BookParticipant {FirstName = "Ewan", LastName = "Buckingham", 
                       ParticipantType = ParticipantTypes.Editor} 
}; 
 
XElement xBookParticipants = 
   new XElement("BookParticipants",  
                 bookParticipants.Select(p => 
                   new XElement("BookParticipant", 
                     new XAttribute("type", p.ParticipantType), 
                     new XElement("FirstName", p.FirstName), 
                     new XElement("LastName", p.LastName)))); 
 
Console.WriteLine(xBookParticipants); 

打印出来是这样

<BookParticipants> 
  <BookParticipant type="Author"> 
    <FirstName>Joe</FirstName> 
    <LastName>Rattz</LastName> 
  </BookParticipant> 
  <BookParticipant type="Editor"> 
    <FirstName>Ewan</FirstName> 
    <LastName>Buckingham</LastName> 
  </BookParticipant> 
</BookParticipants> 

这代码真是简单到夸张了