/// <summary>
        /// All of the Color slide transition functionality is encapsulated in this handy helper
        /// which we will init once
        /// </summary>
        private void InitializeTransitionHelper()
        {
            // we pass in the UIElement that will host our Visuals
            transition = new ColorSlideTransitionHelper(hostForVisual);

            // when the transition completes, we need to know so we can update other property values
            transition.ColorSlideTransitionCompleted += ColorSlideTransitionCompleted;
        }
        /// <summary>
        /// All of the Color slide transition functionality is encapsulated in this handy helper
        /// which we will init once
        /// </summary>
        private void InitializeTransitionHelper()
        {
            // we pass in the UIElement that will host our Visuals
            transition = new ColorSlideTransitionHelper(hostForVisual);

            // when the transition completes, we need to know so we can update other property values
            transition.ColorSlideTransitionCompleted += ColorSlideTransitionCompleted;
        }