Can I use Serializable Attribute instead of DataContract Attribute in WCF ?

I have a goal to migrate WEB Services to  WCF( wsHttpBinding;)
Is it possible  DO not PROVIDE A  DataContract attribute   for classes/ parameters migrated ,
just live  Serializable Attribute instead?
YampolkaValeriya YampolskaAsked:
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BuggyCoderCommented:
Yes it is, the only difference however is that using serializable you can only serialize fields and not properties.

Also serializable work on opt out model where in a field that don't want to get serialized has to mark itself as nonserialized, however DataContract works on OptIn approach where any property that wants to get serialized has to mark itself as DataMember.

Also serializable will serialize the assembly information in stream along with object state, however DC only writes state to stream(XML) which is what is required in SOA.

Here is a comparison:-
http://social.msdn.microsoft.com/Forums/en-US/wcf/thread/be796bd0-2502-4bd3-96d9-60bf7d68930d/
http://msdn.microsoft.com/en-us/library/ms730035.aspx
YampolkaValeriya YampolskaAuthor Commented:
Thanks a lot .
As I understood correctly  serializable and datacontract attributes provide different serialization engines behind the scenes. If some classes  are serializable by default    and do not need 'serializable' attribute  to be serialized   like Dataset ?
Should I provide DataContract  attribute for DataSet?.
How WCF works with ADO.NET classes ?What kind of serialization it use?
And  could you  please tell  me what does it mean opt out and opt in model?
BuggyCoderCommented:
for dataset since it is marked serializable, so it will be serialized automatically be netdatacontractserializer.

Opt Out approach means that all members of you object will serialized by default, the one which you don't want to serialize, you must mark them with [NonSerialized] attribute. This will opt them out of serialization.

However in DataContract, by default no members will be serialized until you mark them with DataMember or until they opt in for serialization.

Hope your doubts are clear and you close this question now....
Suggest you google more about DC and Serialization in .Net....

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