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Showing content from https://docs.microsoft.com/en-us/windows/uwp/dotnet-native/attributeimplies-element-net-native below:

<AttributeImplies> Element (.NET Native) - UWP applications

<AttributeImplies> Element (.NET Native)

In this article

Defines policy for code elements the containing attribute is applied to.

Syntax

<AttributeImplies Activate="policy_type"
                  Browse="policy_type"
                  Dynamic="policy_type"
                  Serialize="policy_type"
                  DataContractSerializer="policy_setting"
                  DataContractJsonSerializer="policy_setting"
                  XmlSerializer="policy_setting"
                  MarshalObject="policy_setting"
                  MarshalDelegate="policy_setting"
                  MarshalStructure="policy_setting" />

Attributes and Elements

The following sections describe attributes, child elements, and parent elements.

Attributes Attribute Attribute type Description Activate Reflection Optional attribute. Controls runtime access to constructors to enable activation of instances. Browse Reflection Optional attribute. Controls querying for information about program elements, but does not enable any runtime access. Dynamic Reflection Optional attribute. Controls runtime access to all type members, including constructors, methods, fields, properties, and events, to enable dynamic programming. Serialize Serialization Optional attribute. Controls runtime access to constructors, fields, and properties, to enable type instances to be serialized and deserialized by libraries such as the Newtonsoft JSON serializer. DataContractSerializer Serialization Optional attribute. Controls policy for serialization that uses the System.Runtime.Serialization.DataContractSerializer class. DataContractJsonSerializer Serialization Optional attribute. Controls policy for JSON serialization that uses the System.Runtime.Serialization.Json.DataContractJsonSerializer class. XmlSerializer Serialization Optional attribute. Controls policy for XML serialization that uses the System.Xml.Serialization.XmlSerializer class. MarshalObject Interop Optional attribute. Controls policy for marshaling reference types to Windows Runtime and COM. MarshalDelegate Interop Optional attribute. Controls policy for marshaling delegate types as function pointers to native code. MarshalStructure Interop Optional attribute. Controls policy for marshaling value types to native code. All attributes Value Description policy_setting The setting to apply to this policy type. Possible values are All, Auto, Excluded, Public, PublicAndInternal, Required Public, Required PublicAndInternal, and Required All. For more information, see Runtime Directive Policy Settings. Child Elements

None.

Parent Elements Element Description <Type> Applies reflection policy to a type and all its members.

The <AttributeImplies> element is used if its containing type is an attribute (that is, a class derived from System.Attribute). If the attribute is applied to a particular program element, the policy defined by the <AttributeImplies> element applies to that program element.

The reflection, serialization, and interop attributes are all optional, although at least one should be present.