Deserialization of changed objects

[Urs Vogel]

Hi

Let's assume that I have an object_V1 (version 1) serialized to disk. Later,
the class for object_V1 will change to object_V2, having some more members.
Now, I would like to read my previously saved objects of type object_V1 into
object_V2, which (logically) now throws an exception.

I tried to make use of the HeaderHandler, but this gives me only access to
the methods, not the members. I also tried to inherit object_V1 into
object_V2, which didn't work either.

Is there an way to control this deserialization process, any samples around?

Any hints ar appreciated.

Thanks. Urs.

[Joe Mayo]

"Urs Vogel" <ur******@yahoo.com> wrote in message
news:Oq**************@TK2MSFTNGP12.phx.gbl...

Is there an way to control this deserialization process, any samples around?

Hi Urs,

You'll need to implement ISerializable on the type you are serializing and
deserializing and control the versioning yourself.

Joe
--
http://www.csharp-station.com

[rsarosh]

you can deserialize the same object, if you changed the
object by adding a property, i am afraid you are going to
get a fresh and warm exception ... Lets wait and see if
some one tells otherwise ..

- Sarosh

-----Original Message-----
Hi

Let's assume that I have an object_V1 (version 1) serialized to disk. Later,the class for object_V1 will change to object_V2, having some more members.Now, I would like to read my previously saved objects of type object_V1 intoobject_V2, which (logically) now throws an exception.

I tried to make use of the HeaderHandler, but this gives me only access tothe methods, not the members. I also tried to inherit object_V1 intoobject_V2, which didn't work either.

Is there an way to control this deserialization process, any samples around?
Any hints ar appreciated.

Thanks. Urs.
.