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Issue deserializing List<object> with null value

See original GitHub issue

I have the following example class:

public class TestClass
{
	public List<object> TestProperty { get; set; } = new List<object> { null };
}

Serializing it generates the following xml:

<?xml version="1.0" encoding="UTF-8"?>
<Program-TestClass xmlns="clr-namespace:XmlMigrator;assembly=XmlMigrator" xmlns:sys="https://extendedxmlserializer.github.io/system">
   <TestProperty>
      <Capacity>4</Capacity>
      <Null xmlns="https://extendedxmlserializer.github.io/v2" />
   </TestProperty>
</Program-TestClass>

When deserializing it I get the following exception:

Unhandled Exception: System.ArgumentNullException: Value cannot be null.
Parameter name: key
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at ExtendedXmlSerializer.Core.Sources.CacheBase`2.Get(TKey key)
   at ExtendedXmlSerializer.ExtensionModel.References.DeferredContents.Get(TypeInfo parameter)
   at ExtendedXmlSerializer.ContentModel.RuntimeSerialization.Get(TypeInfo parameter)
   at ExtendedXmlSerializer.ContentModel.RuntimeSerializer.Get(IFormatReader reader)
   at ExtendedXmlSerializer.ContentModel.SerializerAdapter`1.Get(IFormatReader parameter)
   at ExtendedXmlSerializer.ExtensionModel.RootInstanceExtension.Serializer.Get(IFormatReader parameter)
   at ExtendedXmlSerializer.ExtensionModel.References.CircularReferenceEnabledSerialization.Container.Get(IFormatReader parameter)
   at ExtendedXmlSerializer.ContentModel.Serializer`1.Get(IFormatReader parameter)
   at ExtendedXmlSerializer.ContentModel.Serializer`1.Get(IFormatReader parameter)
   at ExtendedXmlSerializer.ContentModel.Collections.CollectionContentsHandler.Handle(IListInnerContent contents, IReader reader)
   at ExtendedXmlSerializer.ContentModel.Content.InnerContentServices.Handle(IListInnerContent contents, IReader reader)
   at ExtendedXmlSerializer.ContentModel.Collections.CollectionInnerContentHandler.Execute(IInnerContent parameter)
   at ExtendedXmlSerializer.Core.SelectedCommand`1.Execute(T parameter)
   at ExtendedXmlSerializer.ContentModel.Content.InnerContentReader.Get(IFormatReader parameter)
   at ExtendedXmlSerializer.ContentModel.Serializer`1.Get(IFormatReader parameter)
   at ExtendedXmlSerializer.ExtensionModel.References.ReferenceReader.Get(IFormatReader parameter)
   at ExtendedXmlSerializer.ExtensionModel.References.ReferenceSerializer.Get(IFormatReader parameter)
   at ExtendedXmlSerializer.ContentModel.Serializer`1.Get(IFormatReader parameter)
   at ExtendedXmlSerializer.ContentModel.Members.MemberSerializer.Get(IFormatReader parameter)
   at ExtendedXmlSerializer.ContentModel.Members.MemberHandler.Handle(IInnerContent contents, IMemberSerializer member)
   at ExtendedXmlSerializer.ContentModel.Content.InnerContentServices.Handle(IInnerContent contents, IMemberSerializer member)
   at ExtendedXmlSerializer.ContentModel.Members.MemberInnerContentHandler.IsSatisfiedBy(IInnerContent parameter)
   at ExtendedXmlSerializer.ContentModel.Members.MemberInnerContentHandler.Execute(IInnerContent parameter)
   at ExtendedXmlSerializer.ContentModel.Content.InnerContentReader.Get(IFormatReader parameter)
   at ExtendedXmlSerializer.ContentModel.Serializer`1.Get(IFormatReader parameter)
   at ExtendedXmlSerializer.ExtensionModel.References.ReferenceReader.Get(IFormatReader parameter)
   at ExtendedXmlSerializer.ExtensionModel.References.ReferenceSerializer.Get(IFormatReader parameter)
   at ExtendedXmlSerializer.ContentModel.SerializerAdapter`1.Get(IFormatReader parameter)
   at ExtendedXmlSerializer.ExtensionModel.RootInstanceExtension.Serializer.Get(IFormatReader parameter)
   at ExtendedXmlSerializer.ExtensionModel.References.CircularReferenceEnabledSerialization.Container.Get(IFormatReader parameter)
   at ExtendedXmlSerializer.Read`1.Get(T parameter)
   at ExtendedXmlSerializer.Serializer`2.Deserialize(TRead reader)
   at ExtendedXmlSerializer.ExtensionModel.Xml.ExtendedXmlSerializer.Deserialize(XmlReader reader)
   at XmlMigrator.Program.Main() in C:\...\Program.cs:line 159

ExtendedXmlSerializer version: 2.1.6

Issue Analytics

State:
Created 5 years ago
Comments:5 (3 by maintainers)

Top GitHub Comments

1reaction

bpaczkowskicommented, Sep 11, 2018

Clearing the cache indeed worked. The reported issue is also fixed, thanks for the quick response!

0reactions

Mike-E-angelocommented, Sep 11, 2018

OK… I’ve pushed 2.1.7. It should be public here in the next hour. Please let me know if you run into any problems and I will help out to see what’s wrong. Closing this issue for now.

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