使用 XML 序列化将属性放入不同的 XML 命名空间

Question

我正在使用 VSTS2008 + C# + .Net 3.0。我正在使用下面的代码来序列化 XML，这是我当前的代码和序列化的 XML 文件。我的目的是让 MyInnerObjectProperties 属于一个特殊的 XML 命名空间 (http://foo/2009) 并将这个命名空间作为默认命名空间。有什么想法可以实现吗？

当前输出：

<?xml version="1.0"?>
<MyClass xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <MyObjectProperty>
    <MyInnerObjectProperties>
      <MyInnerObjectProperty>
        <ObjectName>Foo Type</ObjectName>
      </MyInnerObjectProperty>
      <MyInnerObjectProperty>
        <ObjectName>Goo Type</ObjectName>
      </MyInnerObjectProperty>
    </MyInnerObjectProperties>
  </MyObjectProperty>
</MyClass>

当前代码：

public class MyClass
{
    private MyObject[] _myObjectProperty;

    [XmlElement(IsNullable=false)]
    public MyObject[] MyObjectProperty
    {
        get
        {
            return _myObjectProperty;
        }
        set
        {
            _myObjectProperty = value;
        }
    }
}
public class MyObject
{
    private MyInnerObject[] _myInnerObjectProperty;

    [XmlArrayItemAttribute("MyInnerObjectProperty", typeof(MyInnerObject),  IsNullable=false)]
    public MyInnerObject[] MyInnerObjectProperties
    {
        get
        {
            return _myInnerObjectProperty;
        }
        set
        {
            _myInnerObjectProperty = value;
        }
    }
}

public class MyInnerObject
{
    public string ObjectName;
}

public class Program
{
    static void Main(string[] args)
    {
        XmlSerializer s = new XmlSerializer(typeof(MyClass));
        FileStream fs = new FileStream("foo.xml", FileMode.Create);
        MyClass instance = new MyClass();
        instance.MyObjectProperty = new MyObject[1];
        instance.MyObjectProperty[0] = new MyObject();
        instance.MyObjectProperty[0].MyInnerObjectProperties = new MyInnerObject[2];
        instance.MyObjectProperty[0].MyInnerObjectProperties[0] = new MyInnerObject();
        instance.MyObjectProperty[0].MyInnerObjectProperties[0].ObjectName = "Foo Type";
        instance.MyObjectProperty[0].MyInnerObjectProperties[1] = new MyInnerObject();
        instance.MyObjectProperty[0].MyInnerObjectProperties[1].ObjectName = "Goo Type";

        s.Serialize(fs, instance);

        return;
    }
}

Answer 1

这个怎么样：

[XmlArrayItemAttribute( Namespace = "http://foo.com/2009" /* other attr. params. */ )]
public MyInnerObject[] MyInnerObjectProperties
{
    get { ... }
    set { ... }
}

Answer 2

试试

public class MyObject
{
    [XmlArrayItemAttribute("MyInnerObjectProperty", typeof (MyInnerObject),
        IsNullable = false)]
    [XmlArray(Namespace = "http://foo.com/2009")]
    public MyInnerObject[] MyInnerObjectProperties { get; set; }
}

对我来说，这会产生：

<?xml version="1.0" encoding="utf-8"?>
<MyClass xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    <MyObjectProperty>
        <MyInnerObjectProperties xmlns="http://foo.com/2009">
            <MyInnerObjectProperty>
                <ObjectName>Foo Type</ObjectName>
            </MyInnerObjectProperty>
            <MyInnerObjectProperty>
                <ObjectName>Goo Type</ObjectName>
            </MyInnerObjectProperty>
        </MyInnerObjectProperties>
    </MyObjectProperty>
</MyClass>

Answer 3

您需要创建一个 XmlSerializerNamespaces 对象，并将所需的命名空间添加到其中。

XmlSerializerNamespaces 对象包含 XmlSerializer 用于在 XML 文档实例中生成限定名称的 XML 命名空间和前缀。

在您的 c# 代码中：

XmlSerializerNamespaces myNameSpaces = new XmlSerializerNamespaces();
myNameSpaces.Add("MyInnerObject", "http://foo/2009");

然后，为你的类添加一个属性，如下所示：

public class MyInnerObject
{
[XmlElement(Namespace = "http://foo/2009")]

更多信息请访问：

http://msdn.microsoft.com/en-us/library/system.xml.serialization.xmlserializernamespaces.aspx