Enyim序列化错误Linq

Question

我使用Devart来执行DB对象和存储过程映射。

现在我想在缓存中存储一个存储过程对象结果(通过MemCached使用Enyim )。

当我尝试这样做时，我遇到了这样的错误(简而言之:在Devart.Data.Linq中键入Devart.Data.Linq.a 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

这是Enyim日志。我确信MemCached的配置是正确的，因为我尝试过通过远程登录在缓存中获取和设置对象，但这已经完成了。

Answer 1

您的linq表达式尚未执行，因此没有可序列化的对象可写入缓存。

如果您在IEnumerable上执行".ToList()“，就应该没问题。

Answer 2

根据堆栈跟踪，Enyim.Caching.MemcachedClient使用BinaryFormatter来序列化对象。LinqConnect实体不是为通过BinaryFormatter序列化而设计的，应改用DataContractSerializer。关于这种序列化方式的更多信息，请参考下面的文章：http://msdn.microsoft.com/en-us/library/bb546184.aspx#Y1680 (它是关于LINQ to SQL的，但也可以应用于LinqConnect )。