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Asked: 2026-05-25T02:31:38+00:00

I’m using Devart to execute DB object and Store Procedure mapping. Now i want

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I’m using Devart to execute DB object and Store Procedure mapping.

Now i want to store in cache (using Enyim by MemCached) a Store Procedure object result.

When i’m trying to do that i have this kind of error (in short: type Devart.Data.Linq.a in Devart.Data.Linq is not signed as serializable)

Enyim.Caching.MemcachedClient - System.Runtime.Serialization.SerializationException: Il tipo 'Devart.Data.Linq.a' nell'assembly 'Devart.Data.Linq, Version=2.50.29.0, Culture=neutral, PublicKeyToken=09af7300eec23701' non è contrassegnato come serializzabile.
   in System.Runtime.Serialization.FormatterServices.InternalGetSerializableMembers(RuntimeType type)
   in System.Runtime.Serialization.FormatterServices.GetSerializableMembers(Type type, StreamingContext context)
   in System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitMemberInfo()
   in System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitSerialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter)
   in System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.Serialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter)
   in System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Write(WriteObjectInfo objectInfo, NameInfo memberNameInfo, NameInfo typeNameInfo)
   in System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Serialize(Object graph, Header[] inHeaders, __BinaryWriter serWriter, Boolean fCheck)
   in System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph, Header[] headers, Boolean fCheck)
   in System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph)
   in Enyim.Caching.Memcached.DefaultTranscoder.SerializeObject(Object value) in d:\d\repo\EnyimMemcached\Enyim.Caching\Memcached\Transcoders\DefaultTranscoder.cs:riga 219
   in Enyim.Caching.Memcached.DefaultTranscoder.Serialize(Object value) in d:\d\repo\EnyimMemcached\Enyim.Caching\Memcached\Transcoders\DefaultTranscoder.cs:riga 65
   in Enyim.Caching.Memcached.DefaultTranscoder.Enyim.Caching.Memcached.ITranscoder.Serialize(Object value) in d:\d\repo\EnyimMemcached\Enyim.Caching\Memcached\Transcoders\DefaultTranscoder.cs:riga 18
   in Enyim.Caching.MemcachedClient.PerformStore(StoreMode mode, String key, Object value, UInt32 expires, UInt64& cas, Int32& statusCode) in d:\d\repo\EnyimMemcached\Enyim.Caching\MemcachedClient.cs:riga 313Enyim.Caching.MemcachedClient - System.Runtime.Serialization.SerializationException: Il tipo 'Devart.Data.Linq.a' nell'assembly 'Devart.Data.Linq, Version=2.50.29.0, Culture=neutral, PublicKeyToken=09af7300eec23701' non è contrassegnato come serializzabile.
   in System.Runtime.Serialization.FormatterServices.InternalGetSerializableMembers(RuntimeType type)
   in System.Runtime.Serialization.FormatterServices.GetSerializableMembers(Type type, StreamingContext context)
   in System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitMemberInfo()
   in System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitSerialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter)
   in System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.Serialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter)
   in System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Write(WriteObjectInfo objectInfo, NameInfo memberNameInfo, NameInfo typeNameInfo)
   in System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Serialize(Object graph, Header[] inHeaders, __BinaryWriter serWriter, Boolean fCheck)
   in System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph, Header[] headers, Boolean fCheck)
   in System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph)
   in Enyim.Caching.Memcached.DefaultTranscoder.SerializeObject(Object value) in d:\d\repo\EnyimMemcached\Enyim.Caching\Memcached\Transcoders\DefaultTranscoder.cs:riga 219
   in Enyim.Caching.Memcached.DefaultTranscoder.Serialize(Object value) in d:\d\repo\EnyimMemcached\Enyim.Caching\Memcached\Transcoders\DefaultTranscoder.cs:riga 65
   in Enyim.Caching.Memcached.DefaultTranscoder.Enyim.Caching.Memcached.ITranscoder.Serialize(Object value) in d:\d\repo\EnyimMemcached\Enyim.Caching\Memcached\Transcoders\DefaultTranscoder.cs:riga 18
   in Enyim.Caching.MemcachedClient.PerformStore(StoreMode mode, String key, Object value, UInt32 expires, UInt64& cas, Int32& statusCode) in d:\d\repo\EnyimMemcached\Enyim.Caching\MemcachedClient.cs:riga 313

This is Enyim log.
I’m surely that MemCached is right configured ’cause i’ve tried to get and set object in cache by telnet and this has been done.

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1 Answer

  1. Editorial Team

    You linq expression has not been executed and for this reason there are no serializable objects to write to the cache.

    If you do a “.ToList()” on the IEnumerable you should be fine.

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