KnownTypeAttribute Class

KnownTypeAttribute Class

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Specifies types that should be recognized by the DataContractSerializer when serializing or deserializing a given type.

System.Object
  System.Attribute
    System.Runtime.Serialization.KnownTypeAttribute

Namespace:  System.Runtime.Serialization
Assembly:  System.Runtime.Serialization (in System.Runtime.Serialization.dll)

[AttributeUsageAttribute(AttributeTargets.Class|AttributeTargets.Struct, Inherited = true, 
	AllowMultiple = true)]
public sealed class KnownTypeAttribute : Attribute

The KnownTypeAttribute type exposes the following members.

  NameDescription
Public methodKnownTypeAttribute(String)Initializes a new instance of the KnownTypeAttribute class with the name of a method that returns an IEnumerable of known types.
Public methodKnownTypeAttribute(Type)Initializes a new instance of the KnownTypeAttribute class with the specified type.
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  NameDescription
Public propertyMethodNameGets the name of a method that returns a list of types that should be recognized during serialization or deserialization.
Public propertyTypeGets the type that should be recognized during serialization or deserialization by the DataContractSerializer.
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  NameDescription
Public methodEqualsInfrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeReturns the hash code for this instance. (Inherited from Attribute.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodMatchWhen overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
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Apply the KnownTypeAttribute attribute to a type to indicate to the DataContractSerializer the types that should be recognized when serializing or deserializing an instance of the type to which the attribute is applied. This attribute could also be recognized by other serializers that understand data contracts.

NoteNote:

In your code, you can use the word KnownType instead of the longer KnownTypeAttribute.

You can either apply exactly one KnownTypeAttribute instance with the MethodName property set, or one or more KnownTypeAttribute instances with the Type property set.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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