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.
Inheritance Hierarchy
System..::.Object
System..::.Attribute
System.Runtime.Serialization..::.KnownTypeAttribute
Namespace: System.Runtime.Serialization
Assembly: System.Runtime.Serialization (in System.Runtime.Serialization.dll)
Syntax
<AttributeUsageAttribute(AttributeTargets.Class Or AttributeTargets.Struct, Inherited := True, _
AllowMultiple := True)> _
Public NotInheritable Class KnownTypeAttribute _
Inherits Attribute
[AttributeUsageAttribute(AttributeTargets.Class|AttributeTargets.Struct, Inherited = true,
AllowMultiple = true)]
public sealed class KnownTypeAttribute : Attribute
The KnownTypeAttribute type exposes the following members.
Constructors
| Name | Description | |
|---|---|---|
.gif "Public method") |
KnownTypeAttribute(String) | Initializes a new instance of the KnownTypeAttribute class with the name of a method that returns an IEnumerable of known types. |
|
KnownTypeAttribute(Type) | Initializes a new instance of the KnownTypeAttribute class with the specified type. |
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Properties
| Name | Description | |
|---|---|---|
.gif "Public property") |
MethodName | Gets the name of a method that returns a list of types that should be recognized during serialization or deserialization. |
|
Type | Gets the type that should be recognized during serialization or deserialization by the DataContractSerializer. |
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Methods
| Name | Description | |
|---|---|---|
|
Equals | Infrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.) |
.gif "Protected method") |
Finalize | Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.) |
|
GetHashCode | Returns the hash code for this instance. (Inherited from Attribute.) |
|
GetType | Gets the Type of the current instance. (Inherited from Object.) |
|
Match | When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.) |
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MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
|
ToString | Returns a string that represents the current object. (Inherited from Object.) |
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Remarks
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.
Note
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.
Version Information
Windows Phone OS
Supported in: 8.1, 8.0, 7.1, 7.0
Platforms
Windows Phone
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.