MainPage.xaml.cs

FlipTileData tile = new FlipTileData();
tile.Title = data.Name;
tile.Count = tasksOverdue.Count + tasksDueToday.Count;

FlipTileTemplate image = new FlipTileTemplate();
string imagePath = "/Shared/ShellContent/" + data.Id + ".png";

image.RenderLiveTileImage(imagePath, Strings.LiveTileDueToday + ":", FormatFlipTileTemplateContent(tasksDueToday));
tile.BackgroundImage = new Uri("isostore:" + imagePath, UriKind.Absolute);

ShellTile.Create(new Uri("/TaskListPage.xaml?id=" + MostRecentTaskListClick.Id, UriKind.Relative), tile, true);