Windows ストアアプリの独自のTriggerBehaviorサンプル。

MyTriggerBehavior.cs

using Microsoft.Xaml.Interactivity;
using System;
using Windows.ApplicationModel;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Markup;

namespace App1
{
    [ContentProperty(Name = "Actions")]
    public class MyTriggerBehavior : DependencyObject, IBehavior
    {
        public DependencyObject AssociatedObject
        {
            get { return this.associatedObject; }
        }
        private DependencyObject associatedObject;

        public void Attach(DependencyObject associatedObject)
        {
            if (associatedObject == this.associatedObject || DesignMode.DesignModeEnabled)
            {
                return;
            }
            if (this.associatedObject != null)
            {
                throw new InvalidOperationException();
            }
            this.associatedObject = associatedObject;

            RegisterTrigger();
        }

        public void Detach()
        {
            UnRegisterTrigger();
            this.associatedObject = null;
        }

        public ActionCollection Actions
        {
            get
            {
                var actionCollection = (ActionCollection)GetValue(ActionsProperty);

                if (actionCollection == null)
                {
                    actionCollection = new ActionCollection();
                    SetValue(MyTriggerBehavior.ActionsProperty, actionCollection);
                }

                return actionCollection;
            }
        }

        public static readonly DependencyProperty ActionsProperty =
            DependencyProperty.Register("Actions", typeof(ActionCollection), typeof(MyTriggerBehavior),
                new PropertyMetadata(null));

        private void RegisterTrigger()
        {
            var button = this.associatedObject as Button;
            if (button == null)
            {
                return;
            }
            button.Click += OnClick;
        }

        private void UnRegisterTrigger()
        {
            var button = this.associatedObject as Button;
            if (button == null)
            {
                return;
            }
            button.Click -= OnClick;
        }

        private void OnClick(object sender, RoutedEventArgs args)
        {
            Interaction.ExecuteActions(sender, this.Actions, args);
        }

    }
}