HubtileStates.cs

using System.Windows;
using Microsoft.Phone.Controls;

namespace HubtileStates
{
    public partial class MainPage : PhoneApplicationPage
    {
        public MainPage()
        {
            InitializeComponent();

        }

        private void HubTile_Tap(object sender, System.Windows.Input.GestureEventArgs e)
        {
            HubTile tile = sender as HubTile;
            switch (tile.Message)
            {
                case "Expanded":
                    VisualStateManager.GoToState(tile, "Expanded", true); 
                    break;
                case "Semiexpanded":
                    VisualStateManager.GoToState(tile, "Semiexpanded", true); 
                    break;
                case "Flipped":
                    VisualStateManager.GoToState(tile, "Flipped", true); 
                    break;
                case "Collapsed":
                    VisualStateManager.GoToState(tile, "Collapsed", true); 
                    break;
            }
        }
    }
}