保存列表<T>到 XML 文件 [英] Save List&lt;T&gt; to XML file

问题描述

我想将从数据库中获取的记录保存在一个 XML 文件中，
将 XML 文件中的 x 条记录放入自定义集合 List
处理它们并将更新的项目保存回 XML 文件.

I want to save records fetched from database in an XML file,
take x number of records from XML file into a custom collection List<T>
process them and save updated items back into XML file.

'T' 是一个具有值类型属性的简单对象，类似于 -

'T' is a simple object with value type properties, something like -

public class T
{
   public int Id {get; set;}
   public string property1 {get; set;}
   public string property2 {get; set;}
}

请指导我如何将自定义集合 List 保存到 XML 文件，反之亦然?

Please guide me how can I save custom collection List<T> to XML file and vice-versa?

另外，因为我没有发送这个 XML 文件，所以按照一些回复中的建议使用 XmlSerializer 是否有意义?

Also, because I am not sending out this XML file, will it make sense to go for XmlSerializer as suggested in some of the replies?

推荐答案

虽然您可以使用序列化程序 - 很多时候这是正确的答案 - 我个人会使用 Linq to XML 这将使您更灵活地了解如何您的 XML 应该看起来像，即从基于您的类的集合 foos 创建以下 XML:

While you could use a serializer - and many times this is the right answer - I personally would use Linq to XML which would allow you to be more flexible on how your XML should look like, i.e. to create the following XML from a collection foos based on your class:

<Foos>
  <foo Id="1" property1="someprop1" property2="someprop2" />
  <foo Id="1" property1="another" property2="third" />
</Foos>

您可以使用:

var xml = new XElement("Foos", foos.Select( x=> new XElement("foo", 
                                                new XAttribute("Id", x.Id), 
                                                new XAttribute("property1", x.property1), 
                                                new XAttribute("property2", x.property2))));

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