Serialize classes which implement IEnumerable

[AlleSchonWeg]

Hi ,
i hava a class which implement IEnumerable. Like this:

public class MyDemoClass: IEnumerable
{
   public string Text
   {
        set;
        get;
   }
   public IEnumerator GetEnumerator()
   {
       return new MyEnumerator();
   }
}

When i deserialize the class Text is always null, even if i set it before serializing. Is this the same behaviour like System.Text.Json: dotnet/runtime#1808 ?
MyDemoClass is a property on another class. This class have the [GenerateShape] attribute. That why i have no [GenerateShape] on MyDemoClass.
What can i do that all public members are serialized and deserialized? I also need a Converter or surrogate type?

Thank you

[eiriktsarpalis]

Like System.Text.Json, Nerdbank.MessagePack always treats types implementing IEnumerable as collections as oppposed to objects with properties. To get back the desired behavior you should either remove the IEnumerable implementation or manually set the type shape kind:

[TypeShape(Kind = TypeShapeKind.Object)]
public class MyDemoClass: IEnumerable
{
  /* implementation goes here */
}

[AlleSchonWeg]

Thank you,
exactly what i want.

[AArnott]

MyDemoClass is a property on another class. This class have the [GenerateShape] attribute. That why i have no [GenerateShape] on MyDemoClass.

Because to generate a shape for a class, all its members must have shapes as well. So GenerateShapeAttribute is transitive. No need then to apply it recursively on every single type.