如果使用自定义XML序列化(IXmlSerialiable
),则在包含具有 NOT 的组成复杂对象的属性的复杂对象上使用自定义{{1}接口,如何在IXmlSerializable
方法中指定您希望反序列化器对这些子属性使用普通反序列化?
注意:类似于this question
答案 0 :(得分:7)
IXmlSerializable
实现起来有点乏味,因为它不是一种全有或全无的方法,因为你无法为普通的XML序列化选择子类型。但是,如果我理解正确,您可以通过为未实现XmlSerializer
的类型手动创建IXmlSerializable
来实现您的目标。
例如,如果我们从两个类开始,Default
没有实现IXmlSerializable
,Custom
确实实现了它。
public class Default // Uses default XML Serialization
{
public int Count { get; set; }
}
public class Custom : IXmlSerializable
{
public int Count { get; set; }
public XmlSchema GetSchema() { throw new NotImplementedException(); }
public void ReadXml(XmlReader reader)
{
reader.ReadToDescendant("Count");
this.Count = reader.ReadElementContentAsInt();
}
public void WriteXml(XmlWriter writer)
{
writer.WriteStartElement("Custom");
writer.WriteElementString("Count", this.Count.ToString());
writer.WriteEndElement();
}
}
然后我们创建第三个类Parent
,它具有前面每个实例的子项,并以支持它的子项调用IXmlSerializable
方法的方式实现ReadXml/WriteXml
并创建另一个孩子的默认XML序列化程序。
public class Parent : IXmlSerializable
{
public Parent()
{
this.Default = new Default { Count = 1 };
this.Custom = new Custom { Count = 2 };
}
public Default Default { get; set; }
public Custom Custom { get; set; }
public XmlSchema GetSchema() { throw new NotImplementedException(); }
public void ReadXml(XmlReader reader)
{
reader.ReadToFollowing("Custom");
this.Custom = new Custom();
this.Custom.ReadXml(reader);
reader.ReadToFollowing("Default");
var serializer = new XmlSerializer(typeof(Default));
this.Default = (Default)serializer.Deserialize(reader);
}
public void WriteXml(XmlWriter writer)
{
this.Custom.WriteXml(writer);
var ns = new XmlSerializerNamespaces();
ns.Add("", "");
new XmlSerializer(typeof(Default)).Serialize(writer, this.Default, ns);
}
}
要完成示例,请对Parent
实例进行序列化和反序列化的示例程序:
static void Main()
{
var sb = new StringBuilder();
var serializer = new XmlSerializer(typeof(Parent));
serializer.Serialize(new StringWriter(sb), new Parent());
Console.WriteLine(sb);
var parent = (Parent)serializer.Deserialize(new StringReader(sb.ToString()));
Console.WriteLine("Parent.Custom.Count: {0}", parent.Custom.Count);
Console.WriteLine("Parent.Default.Count: {0}", parent.Default.Count);
}