DataContractSerializer made its first appearance with release of WCF but can operate outside WCF.

DataContractSerializer can serialize types decorated with DataContract, MessageContract, Serializable attributes, types that implement IXmlSerialisable and all public types without Attributes.

During serialization Reference integrity is by default not preserved. You can preserve it by setting “IsReference = true” to DataContract attribute. Note that this approach my cause problems if DataContractSerializer is not serializer who will deserialize data.

 

You can also use OnSerializing, OnSerialized, OnDeserializing, OnDeserialized Attributes to fine-grain your serialization process.

This tutorial will explain how to serialize and deserialize types by decorating type with DataContract attribute.

First we use need to add reference to System.Runtime.Serialization. Secondly we decorate the type with DataContract Attribute, and inside type wee decorate fields and properties with DataMember Attribute. Then we instantiate DataContractSerializer instance and use its WriteObject and ReadObject methods to serialize/deserialize data.

Example of DataContractSerializer:

By using DataMember Attribute we can serialize automatic properties, because property itself will be serialized and not its backing field.

Because DataContractSerializer does not store type and assembly information we need to tell it which is the type we wish to serialize by specifying type in the DataContractSerializer constructor.

As no type or assembly information are preserved be sure to supply KnownType  Attribute to your base class to be able to use inheritance properly.

DataContractSerializer

Data Contract Serializer

 

You can download solution from this link.

To return to other serialization techniques return to this location.