![]() ![]() Specifying the Default Root Name and Namespace ' All types are known after construction. Type knownTypes = new Type ĭim dcs As New DataContractSerializer(GetType(LibraryPatron), knownTypes) Create a serializer for the inherited types using the knownType parameter. The following code constructs an instance of the serializer using the knownTypes parameter. The third and four classes ( Book and Newspaper) inherit from the LibraryItem class. The second class defines the LibraryItem type. The following example shows a class, LibraryPatron, that includes a collection of a specific type, the LibraryItem. For more information about known types, see Data Contract Known Types. If polymorphism is involved in the types being serialized that is not already handled using the KnownTypeAttribute attribute or some other mechanism, a list of possible known types must be passed to the serializer’s constructor using the knownTypes parameter. ' This can now be used to serialize/deserialize Person but not PurchaseOrder. ![]() This can now be used to serialize/deserialize Person but not PurchaseOrder.ĭim dcs As New DataContractSerializer(GetType(Person)) DataContractSerializer dcs = new DataContractSerializer(typeof(Person)) This code constructs an instance of the DataContractSerializer that can be used only to serialize or deserialize instances of the Person class. The DataContractSerializer has many constructor overloads, but, at a minimum, a root type must be supplied using the type parameter.Ī serializer created for a certain root type cannot be used to serialize (or deserialize) another type, unless the type is derived from the root type. The root type is the type of which instances are serialized or deserialized. After construction, you cannot change any of the settings. Creating a DataContractSerializer InstanceĬonstructing an instance of the DataContractSerializer is an important step. This may cause a problem with a non-WCF client when sending such data to a WCF service. The DataContractSerializer serializes strings containing control characters with a hexadecimal value below 20 as XML entities. Is used when the same types are shared on the serializing and the deserializing ends.īoth DataContractSerializer and NetDataContractSerializer derive from a common base class, XmlObjectSerializer.NET Framework type names as part of the serialized data. Is similar to the BinaryFormatter and SoapFormatter serializers because it also emits.For more information, see the BinaryFormatter security guide. WCF also includes a companion serializer, the NetDataContractSerializer. It also supports the XmlDictionaryReader and XmlDictionaryWriter classes to enable it to produce optimized XML in some cases, such as when using the WCF binary XML format. ![]() When deserializing XML, the serializer uses the XmlReader and XmlWriter classes. For an introduction to data contracts, see Using Data Contracts. For a full list of supported types, see Types Supported by the Data Contract Serializer. NET Framework objects, the serializer understands a variety of serialization programming models, including the new data contract model. This topic explains how the serializer works. ![]() NET Framework objects and XML, in both directions. The DataContractSerializer translates between. Windows Communication Foundation (WCF) includes a new serialization engine, the DataContractSerializer. ![]()
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