什么情况下会出现这类的异常?
An unhandled exception of type 'System.Runtime.Serialization.SerializationException' occurred in system.enterpriseservices.dll
Additional information: The type BusinessObject.TestBusiness in Assembly BusinessObject, Version=1.0.842.18282, Culture=neutral, PublicKeyToken=c879d7d1bb883c47 is not marked as serializable.
如果不使用COM+的事务功能就没有这个问题。这是怎么回事呢?