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我正在使用 Devart 来执行数据库对象和存储过程映射。

现在我想将存储过程对象结果存储在缓存中（使用 MemCached 的 Enyim）。

当我尝试这样做时，我遇到了这种错误（简而言之：Devart.Data.Linq 中的类型 Devart.Data.Linq.a 未签名为可序列化）

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 配置正确，因为我尝试通过 telnet 获取和设置缓存中的对象，这已经完成。

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2 回答 2

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您的 linq 表达式尚未执行，因此没有可序列化的对象写入缓存。

如果您在 IEnumerable 上执行“.ToList()”，您应该没问题。

于 2011-08-31T08:00:18.447 回答
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根据堆栈跟踪， Enyim.Caching.MemcachedClient 使用 BinaryFormatter 序列化对象。LinqConnect 实体并非旨在通过 BinaryFormatter 进行序列化，而是应使用DataContractSerializer 。有关这种序列化方式的更多信息，请参考以下文章：http: //msdn.microsoft.com/en-us/library/bb546184.aspx#Y1680 （写的是LINQ to SQL，但可以应用到 LinqConnect 以及）。

于 2011-08-31T15:30:04.003 回答