反序列化 XML

Question

我想在 C# (.net 2.0) 中反序列化 XML 文件。

XML 的结构如下：

<elements>
   <element>
     <id>
       123
     </id>
     <Files>
       <File id="887" description="Hello World!" type="PDF">
         FilenameHelloWorld.pdf
       </File>
     </Files>
   </element>
<elements>

当我尝试在 C# 中反序列化此结构时，我遇到了文件名问题，该值始终为 NULL，即使我尝试编写 File 类也是如此。

请帮我。 ;-)

Answer 1

以下对我来说效果很好：

public class element
{
    [XmlElement("id")]
    public int Id { get; set; }

    public File[] Files { get; set; }
}

public class File
{
    [XmlAttribute("id")]
    public int Id { get; set; }

    [XmlAttribute("description")]
    public string Description { get; set; }

    [XmlAttribute("type")]
    public string Type { get; set; }

    [XmlText]
    public string FileName { get; set; }
}

class Program
{
    static void Main()
    {
        using (var reader = XmlReader.Create("test.xml"))
        {
            var serializer = new XmlSerializer(typeof(element[]), new XmlRootAttribute("elements"));
            var elements = (element[])serializer.Deserialize(reader);

            foreach (var element in elements)
            {
                Console.WriteLine("element.id = {0}", element.Id);
                foreach (var file in element.Files)
                {
                    Console.WriteLine(
                        "id = {0}, description = {1}, type = {2}, filename = {3}", 
                        file.Id,
                        file.Description,
                        file.Type,
                        file.FileName
                    );
                }
            }

        }
    }
}

Answer 2

这应该有效...

[XmlRoot("elements")]
public class Elements {
    [XmlElement("element")]
    public List<Element> Items {get;set;}
} 
public class Element { 
    [XmlElement("id")]
    public int Id {get;set;}
    [XmlArray("Files")]
    [XmlArrayItem("File")]
    public List<File> Files {get;set;}
}
public class File {
    [XmlAttribute("id")]
    public int Id {get;set;}
    [XmlAttribute("description")]
    public string Description {get;set;}
    [XmlAttribute("type")]
    public string Type {get;set;}
    [XmlText]
    public string Filename {get;set;}
}

特别注意使用不同的属性来表示不同的含义。已验证（修复 xml 的结束元素后）：

string xml = @"..."; // your xml, but fixed

Elements root;
using(var sr = new StringReader(xml))
using(var xr = XmlReader.Create(sr)) {
    root = (Elements) new XmlSerializer(typeof (Elements)).Deserialize(xr);
}
string filename = root.Items[0].Files[0].Filename; // the PDF