Xamarin.Forms.EventAggregator

The EventAggregator provides multicast publish/subscribe functionality. This means there can be multiple publishers that raise the same event and there can be multiple subscribers listening to the same event.

This is the component, works on iOS, Android and UWP.

NuGet

Name	Info
Xamarin.Forms.EventAggregator

Platform Support*

Xamarin.Forms.EventAggregator is a .NET Standard 2.0 library.Its only dependency is the Xamarin.Forms

Setup / Usage

Does not require additional configuration. Just install the package in the shared project and use.

Sample

Create a Sample Message

    public class TextMessage
    {
        public string Text { get; set; }
    }

Register Handler to listen to the event

  private void TextHandler(
    TextMessage message)
        {
            Text = message.Text;
        }
        
   //Register Event Handler
            EventAggregator.Instance.RegisterHandler<TextMessage>(
       TextHandler);

Send Message

   //Register Event
          
EventAggregator.Instance.SendMessage(TextMessage);

The complete example can be downloaded here: https://github.com/TBertuzzi/Xamarin.Forms.EventAggregator/tree/master/XamarinFormsEventAggregatorSample