Impossible de sérialiser l'état de la session
Lors de l'exécution d'un .page aspx, j'obtiens l'erreur suivante. Pouvez-vous s'il vous plaît laissez-moi savoir comment je peux le résoudre.
Unable to serialize the session state. In 'StateServer' and 'SQLServer' mode, ASP.NET will serialize the session state objects, and as a result non-serializable objects or MarshalByRef objects are not permitted. The same restriction applies if similar serialization is done by the custom session state store in 'Custom' mode.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Web.HttpException: Unable to serialize the session state. In 'StateServer' and 'SQLServer' mode, ASP.NET will serialize the session state objects, and as a result non-serializable objects or MarshalByRef objects are not permitted. The same restriction applies if similar serialization is done by the custom session state store in 'Custom' mode.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[SerializationException: Type 'System.Web.UI.WebControls.DropDownList' in Assembly 'System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' is not marked as serializable.]
System.Runtime.Serialization.FormatterServices.InternalGetSerializableMembers(RuntimeType type) +9472709
System.Runtime.Serialization.FormatterServices.GetSerializableMembers(Type type, StreamingContext context) +247
System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitMemberInfo() +160
System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitSerialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter, SerializationBinder binder) +491
System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Write(WriteObjectInfo objectInfo, NameInfo memberNameInfo, NameInfo typeNameInfo) +388
System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Serialize(Object graph, Header[] inHeaders, __BinaryWriter serWriter, Boolean fCheck) +444
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph, Header[] headers, Boolean fCheck) +133
System.Web.Util.AltSerialization.WriteValueToStream(Object value, BinaryWriter writer) +1762
[HttpException (0x80004005): Unable to serialize the session state. In 'StateServer' and 'SQLServer' mode, ASP.NET will serialize the session state objects, and as a result non-serializable objects or MarshalByRef objects are not permitted. The same restriction applies if similar serialization is done by the custom session state store in 'Custom' mode.]
System.Web.Util.AltSerialization.WriteValueToStream(Object value, BinaryWriter writer) +1847
System.Web.SessionState.SessionStateItemCollection.WriteValueToStreamWithAssert(Object value, BinaryWriter writer) +34
System.Web.SessionState.SessionStateItemCollection.Serialize(BinaryWriter writer) +638
System.Web.SessionState.SessionStateUtility.Serialize(SessionStateStoreData item, Stream stream) +244
System.Web.SessionState.SessionStateUtility.SerializeStoreData(SessionStateStoreData item, Int32 initialStreamSize, Byte[]& buf, Int32& length, Boolean compressionEnabled) +67
System.Web.SessionState.SqlSessionStateStore.SetAndReleaseItemExclusive(HttpContext context, String id, SessionStateStoreData item, Object lockId, Boolean newItem) +140
System.Web.SessionState.SessionStateModule.OnReleaseState(Object source, EventArgs eventArgs) +807
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +148
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75
Grâce
source d'informationauteur Sethuraman
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Cette ligne est assez révélateur. Vous avez besoin de marquer des objets avec [Serializable] pour sérialiser l'objet (MSDN lien contient plus de détails à propos de la sérialisation de l'objet graphique).
Dans mon cas, j'ai essayé de sérialiser le non-objet sérialisé qui est
HttpResponse
. Ainsi ce ne pouvait pas m'aider.Cochez cette case si cela ne résout pas votre problème: Asp.net la sérialisation d'erreur pour l'état de session
Ce post économiser mon temps et a résolu mon problème.
Ajouter l'attribut suivant à la classe incriminée:
Si cela ne fonctionne pas, alors:
Envisager d'utiliser le mode="InProc". J'ai rencontré ce problème en passant à "SQLServer" et restauration "InProc". Cela pourrait résoudre le problème, parce que InProc ne nécessite pas d'objets Sérialisables.
Lequel est le mieux, InProc ou SQL Server, pour l'État de Session en mode asp.net?