问题
Ok so I'm trying to use the JavaScriptSerializer to work with this code. However it crashes when it reaches the last line;
Dim json As New String(sr.Serialize(dt))
I get this error message;
A circular reference was detected while serializing an object of type 'System.Reflection.Module'.
I would really appreciate any insights that could help solve this problem.
回答1:
Circular reference means that serialising the object would result in an infinite loop. For example if you would try to serialize object "A" having a 1 to 1 reference to object "B".
Declare a class containg the data you want to serialize with JSON to solve this issue.
回答2:
As hkda150 has already said, you could use a class specifically tailored for being serialized.
This will furthermore enable you to have foreign key values serialized instead of having related full objects serialized. Thus, if you are serializing object a which has a property a.SomeB of type B, then you will often want the ID of a.someB to be present in your webpage. Obviously I don't know enough to be able to say if this is relevant in your specific use case.
BTW, If you find yourself doing a lot of mapping between "business objects" and "objects meant for serialization" you may want to consider using AutoMapper.
来源：https://stackoverflow.com/questions/2307605/vb-net-problem-converting-datatable-to-json