ProtocolAttribute 類別

定義

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

[<System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Interface)>]
type ProtocolAttribute = class
    inherit Attribute

繼承

Attribute

ProtocolAttribute

屬性

AttributeUsageAttribute

備註

Xamarin.iOS 會將所有帶有此屬性的介面匯出為協定至 Objective-C，而實作這些介面的類別在匯出至 Objective-C 時會被標記為實作對應協定。

// 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 ()
  {
  }
}