c# – protobuf-net能处理自动只读属性吗？

protobuf-net能否处理新的自动只读属性,即使用单个get和no私有集定义的自动属性？

public class WithReadonlyProperty {
    public int ReadonlyProperty { get; }
    public WithReadonlyProperty(int val) {
        ReadonlyProperty = val;
    }
}

当我这样做

RuntimeTypeModel
    .Default
    .Add(typeof (WithReadonlyProperty),false)
        .Add(nameof(WithReadonlyProperty.ReadonlyProperty));
var test = new WithReadonlyProperty(12345);
using (var output = File.Create(@"c:\temp\_readonly.bin")) {
    try {
        Serializer.Serialize(output,test);
    } catch (Exception e) {
        Console.WriteLine(e);
    }
}

我得到这个例外：

system.invalidOperationException: Cannot apply changes to property WithReadonlyProperty.ReadonlyProperty
   at ProtoBuf.Serializers.PropertyDecorator.SanityCheck(TypeModel model,PropertyInfo property,IProtoSerializer tail,Boolean& writeValue,Boolean nonPublic,Boolean allowInternal) in c:\Dev\protobuf-net\protobuf-net\Serializers\PropertyDecorator.cs:line 46
   at ProtoBuf.Serializers.PropertyDecorator..ctor(TypeModel model,Type forType,IProtoSerializer tail) in c:\Dev\protobuf-net\protobuf-net\Serializers\PropertyDecorator.cs:line 32
   at ProtoBuf.Meta.ValueMember.BuildSerializer() in c:\Dev\protobuf-net\protobuf-net\Meta\ValueMember.cs:line 375
   at ProtoBuf.Meta.MetaType.BuildSerializer() in c:\Dev\protobuf-net\protobuf-net\Meta\MetaType.cs:line 408
   at ProtoBuf.Meta.MetaType.get_Serializer() in c:\Dev\protobuf-net\protobuf-net\Meta\MetaType.cs:line 384
   at ProtoBuf.Meta.RuntimeTypeModel.Serialize(Int32 key,Object value,ProtoWriter dest) in c:\Dev\protobuf-net\protobuf-net\Meta\RuntimeTypeModel.cs:line 752
   at ProtoBuf.Meta.TypeModel.SerializeCore(ProtoWriter writer,Object value) in c:\Dev\protobuf-net\protobuf-net\Meta\TypeModel.cs:line 186
   at ProtoBuf.Meta.TypeModel.Serialize(Stream dest,SerializationContext context) in c:\Dev\protobuf-net\protobuf-net\Meta\TypeModel.cs:line 217
   at ProtoBuf.Serializer.Serialize[T](Stream destination,T instance) in c:\Dev\protobuf-net\protobuf-net\Serializer.cs:line 86
    ...

是否可以配置protobuf-net以使用公共构造函数？是否有其他方法可以做到这一点？如果可能的话,我想避免使用属性来装饰WithReadonlyProperty类.

解决方法

Protobuf可以使用私有构造函数,所以也许你可以为protobuf使用私有构造函数？