Dictionary with GenericClass value serialized as an Attribute: deserializes value as Null about yaxlib

[axunonb]

Confirmed undesired behavior. Working sample attached.

Original object:

Deserialized object:

YAXLib_Issue_50.zip

[axunonb]

If [YAXAttributeFor("..")] in class GenericValue<T> is omitted serialization/de-serialization works.

[axunonb]

@304NotModified @NKnusperer
Some thoughts on this issue. Do you agree?

---

1. Serialization

The XML output from serialization reflects what is written in code.

2. De-serialization

The XML result coming from serialization cannot be de-serialized to the original Dictionary<int, GenericValue<int>>. While the Key of the dictionary can be identified, the Value as generic class cannot: The serializer "sees" the properties of GenericValue<int> as attributes, but there is no indication that the Value should become an instance of GenericValue<int>.

3. Conclusion

It is possible, that under certain conditions result of a serialization cannot be used for de-serialization.

This is not a bug. The issue should be closed.

4. Code for this example, that allows for de-serialization of serialized XML

public class DictionaryValueGenericClassAsAttribute
{
    [YAXErrorIfMissed(YAXExceptionTypes.Ignore)]
    [YAXDictionary(EachPairName = "Entry", KeyName = "DictKey", ValueName = "DictValue", SerializeKeyAs = YAXNodeTypes.Attribute,
        SerializeValueAs = YAXNodeTypes.Element)]
    public Dictionary<int, GenericValue<int>> Values { get; set; }
}

public class GenericValue<T> where T : IComparable<T>
{
    [YAXAttributeForClass]
    [YAXErrorIfMissed(YAXExceptionTypes.Error)]
    public T Value { get; set; }

    [YAXAttributeForClass]
    [YAXErrorIfMissed(YAXExceptionTypes.Ignore)]
    public T DefaultValue { get; set; }
}

Serialized:

<DictionaryValueGenericClassAsAttribute>
  <Values>
    <Entry DictKey="0">
      <DictValue Value="10" DefaultValue="100" />
    </Entry>
    <Entry DictKey="1">
      <DictValue Value="11" DefaultValue="101" />
    </Entry>
    <Entry DictKey="2">
      <DictValue Value="12" DefaultValue="102" />
    </Entry>
    <Entry DictKey="3">
      <DictValue Value="13" DefaultValue="103" />
    </Entry>
    <Entry DictKey="4">
      <DictValue Value="14" DefaultValue="104" />
    </Entry>
  </Values>
</DictionaryValueGenericClassAsAttribute>