ProtocolAttribute Class

Reference

Definition

Namespace:: Foundation

Assembly:: Xamarin.iOS.dll

Assembly:: Xamarin.Mac.dll

Important

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Attribute applied to interfaces that represent Objective-C protocols.

[System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Interface)]
public sealed class ProtocolAttribute : Attribute

type ProtocolAttribute = class
    inherit Attribute

Inheritance: Attribute
ProtocolAttribute

Attributes: AttributeUsageAttribute

Remarks

Xamarin.iOS will export any interfaces with this attribute as a protocol to Objective-C, and any classes that implement these interfaces will be marked as implementing the corresponding protocol when exported to Objective-C.

// This will create an Objective-C protocol called 'IMyProtocol', with one required member ('requiredMethod')
[Protocol ("IMyProtocol")]
interface IMyProtocol
{
  [Export ("requiredMethod")]
  void RequiredMethod ();
}

// This will export the equivalent of "@interface MyClass : NSObject <IMyProtocol>" to Objective-C.
class MyClass : NSObject, IMyProtocol
{
  void RequiredMethod ()
  {
  }
}

Constructors

ProtocolAttribute()

Properties

FormalSince
IsInformal	Whether the Objective-C protocol is an informal protocol.
Name	The name of the protocol.
WrapperType	The type of a specific managed type that can be used to wrap an instane of this protocol.

Applies to

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