c# d1p1和xmlns中的XML序列化

[DataContract(Namespace = "http://example.com/namespace")]
public class Person
{
    [DataMember]
    public string Name { get; set; }

    [DataMember]
    public Address Address { get; set;
}

[DataContract(Namespace = "http://example.com/namespace")]
public class Address
{
    [DataMember]
    public string Street { get; set; }

    [DataMember]
    public string City { get; set; }
}

<Person xmlns="http://example.com/namespace">
    <Name>John Doe</Name>
    <Address xmlns:d1p1="http://example.com/namespace">
        <d1p1:Street>123 Main St</d1p1:Street>
        <d1p1:City>Anytown</d1p1:City>
    </Address>
</Person>

using (StringWriter writer = new StringWriter())
{
    XmlSerializer serializer = new XmlSerializer(typeof(Person));
    XmlSerializerNamespaces namespaces = new XmlSerializerNamespaces();
    namespaces.Add("ns", "http://example.com/namespace");

    Person person = new Person
    {
        Name = "John Doe",
        Address = new Address
        {
            Street = "123 Main St",
            City = "Anytown"
        }
    };

    serializer.Serialize(writer, person, namespaces);

    string xml = writer.ToString();
    Console.WriteLine(xml);
}

<Person xmlns:ns="http://example.com/namespace">
    <ns:Name>John Doe</ns:Name>
    <ns:Address>
        <ns:Street>123 Main St</ns:Street>
        <ns:City>Anytown</ns:City>
    </ns:Address>
</Person>