Periodic updates of Windows 8 live Tile - windows-8

Question

Say, I want to update the windows 8 live tile periodically, say after 10 seconds. Is there any way to achieve that? I am using metro xaml c# in windows 8.
Here's the code I am writing on Dispatcher Timer's Tick event:
switch(imageIndex)
{
case 0:
imageUrl = "Assets/Image1.png";
break;
case 1:
imageUrl = "Assets/Image1.png";
break;
case 2:
imageUrl = "Assets/Image1.png";
break;
}
ITileWIdeImageAndText01 tileContent = TileContentFactory.CreateTileWideImageAndText01();
tileContent.TextCaptionWrap.Text = "Hello";
tileContent.Image.Src = imageUrl;
tileContent.Image.Alt = "";
ITileSquareImage squareContent = TileContentFactory.CreateTileSquareImage();
squareContent.Image.Src = imageUrl;
squareContent.Image.Alt = "";
tileContent.SquareContent = squareContent;
TileUpdateManager.CreateTileUpdaterForApplication().Update(tileContent.CreateNotification());
Thanks in advance.

Answer 1

Here's how you should do it:
switch(imageIndex)
{
case 0:
imageUrl = "Assets/Image1.png";
break;
case 1:
imageUrl = "Assets/Image1.png";
break;
case 2:
imageUrl = "Assets/Image1.png";
break;
}
ITileWIdeImageAndText01 tileContent = TileContentFactory.CreateTileWideImageAndText01();
tileContent.TextCaptionWrap.Text = "Hello";
tileContent.Image.Src = imageUrl;
tileContent.Image.Alt = "";
ITileSquareImage squareContent = TileContentFactory.CreateTileSquareImage();
squareContent.Image.Src = imageUrl;
squareContent.Image.Alt = "";
tileContent.SquareContent = squareContent;
var updater = TileUpdateManager.CreateTileUpdaterForApplication();
updater.EnableNotificationQueue(true);
updater.AddToSchedule(
new ScheduledTileNotification(
tileContent.CreateNotification(),
DateTime.Now.AddSeconds(10))
{
ExpirationTime=DateTimeOffset.UtcNow.AddSeconds(20)
});
This will result in a notification coming up 10 seconds after you started the app. And it will be expired 10 more second later.
(Also, maybe you should look into background services, because this particular solution might not be the best for what you want...)

Answer 2

Don't use Dispatcher Timer as it will slow your app. You can use the following in your page Initializer:
TileUpdateManager.CreateTileUpdaterForApplication().EnableNotificationQueue(true);