Unable to serialize the session state.

[Bill L]

Hi guys,

Because of restarting application after new DLLs installed into \Bin folder
, we move the session to StateServer, everything'a alright except when I try
to write any simple hash table into session. The Error message shows like
----------------------------------------------------------------------------
-----
Unable to serialize the session state. Please note that non-serializable
objects or MarshalByRef objects are not permitted when session state mode is
'StateServer' or 'SQLServer'.
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.Http Exception: Unable to serialize the session
state. Please note that non-serializable objects or MarshalByRef objects are
not permitted when session state mode is 'StateServer' or 'SQLServer'.

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:
----------------------------------------------------------------------------
------

After reading some posts here and MSDN articles and makes me even more
confused because Hashtable object is ISerializable , and all things write
into hashtable are just strings, so should I do something else? or have to
manually serialize hashtable object by mysel ?

Thanks

Bill

[Bill L]

>

After reading some posts here and MSDN articles and makes me even more
confused because Hashtable object is ISerializable , and all things write
into hashtable are just strings, so should I do something else? or have to
manually serialize hashtable object by mysel ?

Thanks

Bill

Here is stack info,

[SerializationEx ception: The type QMBI.General.In clude.AccessedP age in
Assembly QMBI.General.In clude, Version=0.0.0.0 , Culture=neutral ,
PublicKeyToken= null is not marked as serializable.]

System.Runtime. Serialization.F ormatterService s.InternalGetSe rializableMembe r
s(RuntimeType type, Boolean excludeNonSeria lizable) +853

System.Runtime. Serialization.F ormatterService s.GetSerializab leMembers(Type
type, StreamingContex t context) +300

System.Runtime. Serialization.F ormatters.Binar y.WriteObjectIn fo.InitMemberIn f
o() +103

System.Runtime. Serialization.F ormatters.Binar y.WriteObjectIn fo.InitSerializ e
(Object obj, ISurrogateSelec tor surrogateSelect or, StreamingContex t context,
SerObjectInfoIn it serObjectInfoIn it, IFormatterConve rter converter) +493

System.Runtime. Serialization.F ormatters.Binar y.WriteObjectIn fo.Serialize(Ob j
ect obj, ISurrogateSelec tor surrogateSelect or, StreamingContex t context,
SerObjectInfoIn it serObjectInfoIn it, IFormatterConve rter converter) +48

System.Runtime. Serialization.F ormatters.Binar y.ObjectWriter. Serialize(Objec t
graph, Header[] inHeaders, __BinaryWriter serWriter, Boolean fCheck) +683

System.Runtime. Serialization.F ormatters.Binar y.BinaryFormatt er.Serialize(St r
eam serializationSt ream, Object graph, Header[] headers, Boolean fCheck)
+136
System.Web.Util .AltSerializati on.WriteValueTo Stream(Object value,
BinaryWriter writer) +1621

[HttpException (0x80004005): Unable to serialize the session state. Please
note that non-serializable objects or MarshalByRef objects are not permitted
when session state mode is 'StateServer' or 'SQLServer'.]
System.Web.Util .AltSerializati on.WriteValueTo Stream(Object value,
BinaryWriter writer) +1711
System.Web.Sess ionState.Sessio nDictionary.Ser ialize(BinaryWr iter writer)
+148
System.Web.Sess ionState.StateC lientManager.Se rialize(Session StateItem
item, Stream stream) +146

System.Web.Sess ionState.OutOfP rocStateClientM anager.System.W eb.SessionState .
IStateClientMan ager.Set(String id, SessionStateIte m item, Boolean inStorage)
+121
System.Web.Sess ionState.Sessio nStateModule.On ReleaseState(Ob ject source,
EventArgs eventArgs) +465

System.Web.Sync EventExecutionS tep.System.Web. HttpApplication +IExecutionStep .
Execute() +60
System.Web.Http Application.Exe cuteStep(IExecu tionStep step, Boolean&
completedSynchr onously) +87

seems .net do serialization for the hashtable object but the stream object
is MarshalByRefObj ect, then the error occurs... what can I do to fix that ?

Bill