Linq to sql 对象是否可以为会话状态序列化?

问题描述

不考虑这是个好主意还是坏主意:

Without going into whether this is a good or bad idea:

当会话处于进程外时，是否可以在 ASP.NET 会话中存储 LINQ-to-SQL 域对象?

Is it possible to store a LINQ-to-SQL domain object in the ASP.NET Session, when the session is out-of-process?

我目前收到以下错误并问了这个问题，因为我怀疑 LINQ-to-SQL 对象:

I'm currently getting the following error and asked this question because I suspect the LINQ-to-SQL objects:

无法序列化会话状态.在StateServer"和SQLServer"模式下，ASP.NET 将序列化会话状态对象，因此不允许使用不可序列化的对象或 MarshalByRef 对象.如果自定义会话状态存储在自定义"模式下完成类似的序列化，则同样的限制适用.[/编辑]

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. [/EDIT]

例如

Session["Zoo"] = new Zoo() { 
                         new Lion(),
                         new Tiger(), 
                         new Elephant()
                  }

哪里:

• Zoo、Lion、Tiger、Elephant 都来自 ZooDataContext

和 web.config 文件包含

and the web.config file contains

<sessionState
       mode="StateServer"
       stateConnectionString="tcpip=127.0.0.1:42424"
       stateNetworkTimeout="10"
       sqlConnectionString="SqlStateConnectionString"
       sqlCommandTimeout="30"
       timeout="20"
       regenerateExpiredSessionId="true"/>

推荐答案

在存储在会话或其他任何可能想要序列化的内容之前使用 datacontractserializer 序列化它们... 最近在这里讨论:

Serialize them using the datacontractserializer before storing in session or anything else that may want to serialize... Recently discussed here:

http:///social.msdn.microsoft.com/Forums/en-US/linqtosql/thread/81c84ff4-059b-474f-9c69-b8c59027fd48