有条件的XML序列化 [英] Conditional xml serialization

问题描述

我有以下的C＃类：

public class Books
{

public List<Book> BookList;

}

public class Book
{

public string Title;
public string Description;
public string Author;
public string Publisher;

}

我如何序列化这个类为以下XML？

How can I serialize this class into the following XML?

<Books>
  <Book Title="t1" Description="d1"/>
  <Book Description="d2" Author="a2"/>
  <Book Title="t3" Author="a3" Publisher="p3"/>
</Books>

我希望XML有其唯一的值不为空/空的属性。
例如：在第一个Book元素，作者是空白的，所以它不应该在序列化的XML present

I want the XML to have only those attributes whose values are not null/empty. For example: In the first Book element, author is blank, so it should not be present in the serialized XML.

推荐答案

您应该可以使用 ShouldSerialize * 模式：

public class Book
{
    [XmlAttribute] public string Title {get;set;}
    public bool ShouldSerializeTitle() {
        return !string.IsNullOrEmpty(Title);
    }

    [XmlAttribute] public string Description {get;set;}
    public bool ShouldSerializeDescription() {
        return !string.IsNullOrEmpty(Description );
    }

    [XmlAttribute] public string Author {get;set;}
    public bool ShouldSerializeAuthor() {
        return !string.IsNullOrEmpty(Author);
    }

    [XmlAttribute] public string Publisher {get;set;}
    public bool ShouldSerializePublisher() {
        return !string.IsNullOrEmpty(Publisher);
    }
}

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