RegisterAttribute Class

Definition

Namespace:

Foundation

Assembly:

Microsoft.iOS.dll

Used to register a class to the Objective-C runtime.

[System.AttributeUsage(System.AttributeTargets.Class)]
public sealed class RegisterAttribute : Attribute

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

Inheritance

Attribute

RegisterAttribute

Attributes

AttributeUsageAttribute

Remarks

While all classes derived from the NSObject class are exposed to the Objective-C world, in some cases you might want to expose the class using a different name to the runtime.

In addition, if you want your classes to be available on the iOS designer, you need to annotate those classes with the Register attribute.

// This class is never surfaced to Objective-C's runtime
class NotSurfaced {}

// This class is automatically surfaced to Objective-C's 
// runtime, since it is a subclass of NSObject, and it
// is visible by the Objective-C runtime as "AutomaticallySurfaced"
class AutomaticallySurfaced : NSObject {}

// This class is surfaced to the Objective-C runtime with
// the name 'MyName'
[Register ("MyName")]
class InternalName : NSObject {}

// This UIView is surfaced to the iOS designer.
[Register]
public class MyView : UIView {
    public MyView (IntPtr handle) : base (handle) {}
    public MyView (CGRect rect) : base (rect) {}
}

Constructors

Name	Description
RegisterAttribute()
RegisterAttribute(String, Boolean)	Used to specify how the ECMA class is exposed as an Objective-C class.
RegisterAttribute(String)	Used to specify how the ECMA class is exposed as an Objective-C class.

Properties

Name	Description
IsStubClass	Specifies whether the Objective-C class is a stub class. Objective-C stub classes are sometimes used when bridging Swift to Objective-C.
IsWrapper	Specifies whether the class being registered is wrapping an existing Objective-C class, or if it's a new class.
Name	The name used to expose the class.
SkipRegistration