c# – XmlSerializer没有序列化自定义类型

var data = argsPerCall.ToArray();
var knownTypes = new[] { typeof(int),typeof(int),typeof(string),typeof(McPosition)};

var serializer = new XmlSerializer(data.GetType(),knownTypes);
// Writing the file requires a TextWriter.
var myStreamWriter = new StreamWriter(filename);
serializer.Serialize(myStreamWriter,data);
myStreamWriter.Close();

我遇到了McPosition类型的问题.

用于以下输入

5,1,"R251",{1,2,3}

我正在进行序列化

<ArrayOfAnyType>
    <anyType xsi:type="xsd:int">5</anyType>
    <anyType xsi:type="xsd:int">1</anyType>
    <anyType xsi:type="xsd:string">R251</anyType>
    <anyType xsi:type="McPosition" />
  </ArrayOfAnyType>

知道为什么它没有正确序列化？

编辑：

public struct McPosition : IComparable<McPosition> {
    private readonly int _station;
    private readonly int _slot;
    private readonly int _subslot;


    public static McPosition Empty = new McPosition(-1,-1,-1);


    public McPosition(int station,int slot,int subslot) {
      _station = station;
      _slot    = slot;
      _subslot = subslot;
    }

等等….

谢谢 .