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Question: Is Singleton serializer configured during app-start supported?

See original GitHub issue

Hello,

We’re having problems when using the serializer as a singleton - initialized once during application startup. Is this a supported scenario or should the serializer be created every time it’s used?

See https://github.com/jhranac/XmlSerializerTest for minimum repro-repo

The issue When we create the serializer some DLLs are still not loaded. The AssemblyLoader attempts to rectify this issue, but the “Assembly.Load” does not load .net framework libraries (e.g. System.Drawing). The issue applies to both serialization and deserialization.

Both end up with an exception:

System.IO.FileNotFoundException
  HResult=0x80070002
  Message=Could not load file or assembly 'System.Drawing' or one of its dependencies. The system cannot find the file specified.
  Source=mscorlib
  StackTrace:
   at System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   at System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   at System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   at System.Reflection.Assembly.Load(AssemblyName assemblyRef)
   at ExtendedXmlSerializer.ReflectionModel.AssemblyLoader.Get(String parameter)
   at ExtendedXmlSerializer.ContentModel.Reflection.PartitionedTypeCandidates.Create(IIdentity parameter)
   at ExtendedXmlSerializer.Core.Sources.StructureCacheBase`2.CreateStructure(TKey parameter)
   at System.Runtime.CompilerServices.ConditionalWeakTable`2.GetValue(TKey key, CreateValueCallback createValueCallback)
   at ExtendedXmlSerializer.Core.Sources.StructureCacheBase`2.Get(TKey key)
   at ExtendedXmlSerializer.ContentModel.Reflection.TypeCandidates.Get(IIdentity parameter)
   at ExtendedXmlSerializer.ContentModel.Reflection.Types.Create(IIdentity parameter)
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at ExtendedXmlSerializer.Core.Sources.CacheBase`2.Get(TKey key)
   at ExtendedXmlSerializer.ContentModel.Members.MemberSerializers.IsMember(IMember profile)
   at ExtendedXmlSerializer.ContentModel.Members.MemberSerializers.Content(IMember profile, IMemberAccess access)
   at ExtendedXmlSerializer.ContentModel.Members.MemberSerializers.Get(IMember parameter)
   at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext()
   at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
   at ExtendedXmlSerializer.ContentModel.Members.MemberSerializations.Create(TypeInfo parameter)
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at ExtendedXmlSerializer.Core.Sources.CacheBase`2.Get(TKey key)
   at ExtendedXmlSerializer.ContentModel.Members.InstanceMemberSerializations.Get(TypeInfo parameter)
   at ExtendedXmlSerializer.ContentModel.Members.MemberedContents.Get(TypeInfo parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.ContentModel.Content.RecursionAwareContents.Get(TypeInfo parameter)
   at ExtendedXmlSerializer.ExtensionModel.Xml.CustomSerializationExtension.Contents.Get(TypeInfo parameter)
   at ExtendedXmlSerializer.Core.Sources.Cache`2.Create(TKey parameter)
   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.Members.DefaultMemberContents.Get(IMember parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.DecoratedSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.DecoratedSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.ContentModel.Members.MemberSerializers.Content(IMember profile, IMemberAccess access)
   at ExtendedXmlSerializer.ContentModel.Members.MemberSerializers.Get(IMember parameter)
   at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext()
   at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
   at ExtendedXmlSerializer.ContentModel.Members.MemberSerializations.Create(TypeInfo parameter)
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at ExtendedXmlSerializer.Core.Sources.CacheBase`2.Get(TKey key)
   at ExtendedXmlSerializer.ContentModel.Members.InstanceMemberSerializations.Get(TypeInfo parameter)
   at ExtendedXmlSerializer.ContentModel.Members.MemberedContents.Get(TypeInfo parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.ContentModel.Content.RecursionAwareContents.Get(TypeInfo parameter)
   at ExtendedXmlSerializer.ExtensionModel.Xml.CustomSerializationExtension.Contents.Get(TypeInfo parameter)
   at ExtendedXmlSerializer.Core.Sources.Cache`2.Create(TKey parameter)
   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.Members.VariableTypeMemberContents.Get(IMember parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.DecoratedSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.DecoratedSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.ContentModel.Members.MemberSerializers.Content(IMember profile, IMemberAccess access)
   at ExtendedXmlSerializer.ContentModel.Members.MemberSerializers.Get(IMember parameter)
   at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext()
   at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
   at ExtendedXmlSerializer.ContentModel.Members.MemberSerializations.Create(TypeInfo parameter)
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at ExtendedXmlSerializer.Core.Sources.CacheBase`2.Get(TKey key)
   at ExtendedXmlSerializer.ContentModel.Members.InstanceMemberSerializations.Get(TypeInfo parameter)
   at ExtendedXmlSerializer.ContentModel.Members.MemberedContents.Get(TypeInfo parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.Core.Sources.ConditionalSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.ContentModel.Content.RecursionAwareContents.Get(TypeInfo parameter)
   at ExtendedXmlSerializer.ExtensionModel.Xml.CustomSerializationExtension.Contents.Get(TypeInfo parameter)
   at ExtendedXmlSerializer.Core.Sources.Cache`2.Create(TKey parameter)
   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.Content.Serializers.Get(TypeInfo parameter)
   at ExtendedXmlSerializer.Core.Sources.CoercedParameter`3.Get(TFrom parameter)
   at ExtendedXmlSerializer.Core.Sources.DelegatedSource`2.Get(TParameter parameter)
   at ExtendedXmlSerializer.ExtensionModel.References.ReferenceAwareSerializers.Get(TypeInfo parameter)
   at ExtendedXmlSerializer.Core.Sources.Cache`2.Create(TKey parameter)
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at ExtendedXmlSerializer.Core.Sources.CacheBase`2.Get(TKey key)
   at ExtendedXmlSerializer.ExtensionModel.Xml.Write.Execute(Writing parameter)
   at ExtendedXmlSerializer.ExtensionModel.Xml.Serializer.Serialize(XmlWriter writer, Object instance)
   at ExtendedXmlSerializer.ExtensionModel.Xml.ExtendedXmlSerializer.Serialize(XmlWriter writer, Object instance)
   at ExtendedXmlSerializer.ExtensionModel.Xml.InstanceFormatter.Get(Object parameter)
   at ExtendedXmlSerializer.ExtensionMethodsForSerialization.Serialize(IExtendedXmlSerializer this, Object instance)
   at SerializerTests.Tests.UnitTest1.SerializationTest() in E:\bugtests\ExtendedXmlSerializer\SerializerTests\XmlSerializerTest\SerializerTests.Tests\UnitTest1.cs:line 19

Issue Analytics

  • State:closed
  • Created 4 years ago
  • Comments:6 (5 by maintainers)

github_iconTop GitHub Comments

1reaction
jhranaccommented, Feb 7, 2020

Hi @Mike-EEE ! Looking good. It loads the correct assembly from GAC now.

0reactions
Mike-E-angelocommented, Feb 7, 2020

Alright @jhranac see if this works for you and let me know of any problems you find: https://www.nuget.org/packages/ExtendedXmlSerializer/

<div>ExtendedXmlSerializer 3.1.2</div><div>An extensible Xml Serializer for .NET that builds on the functionality of the classic XmlSerializer with a powerful and robust extension model.</div>
Read more comments on GitHub >

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