I was recently asked to help out with a MSDN forum post on how the WnsRecipe NuGet package can be used to send Push Notifications via WNS to Windows 8 Metro app clients.  Essentially here are the steps.

Note: This post assumes you have already created a client app, requested test credentials for WNS and received a notification channel in your cloud service.  If you have not yet done this I would recommend you watch this episode of cloud cover where I demonstrate the setup:

If you want to download the hi def version here is the direct link to Channel 9 for this episode .

Now that you have watched the pre-req the rest is really quite simple.

Install the WnsRecipe NuGet into your solution using the NuGet Package Manager

• Right click on your project and select ‘Manage NuGet Packages’
• Select Online and search for WnsRecipe and press Install

  using NotificationsExtensions; 
  using NotificationsExtensions.TileContent;
  

• Use the recipe as per normal but recall to set the appropriate BCP 47 language code  for your wideTile.Lang and squareTile.Lang properties

  //new up an access token provider with your credentials
  IAccessTokenProvider tokenProvider = new WnsAccessTokenProvider("<your package sid>", "<your client secret>");     
  var uri = new Uri("<your endpoint uri>");
  
  //Create the wide tile
  ITileWideText09 wideTile = TileContentFactory.CreateTileWideText09();     
  wideTile.Lang = "de-DE";     
  wideTile.TextHeading.Text = "Test-Paket";     
  wideTile.TextBodyWrap.Text = "ä";
  
  // new up a square tile to send down with the wide tile
  // as you do not know if the user has pinned the tile to small or wide
  ITileSquareText02 squareTile = TileContentFactory.CreateTileSquareText02();     
  squareTile.Lang = "de-DE";     
  squareTile.TextHeading.Text = "Test-Paket";     
  squareTile.TextBodyWrap.Text = "ä";     
  
  // set the square tile content
  wideTile.SquareContent = squareTile;
  
  //Send notification - note you should pay attention to the Status codes coming back from the 
  //send operation in the result variable.
  var result = wideTile.Send(uri, tokenProvider);
  

• And that’s basically it as mentioned above this is a somewhat fragment sample. Please do watch the Cloud Cover episode if you require more detail

For a full list with screenshots of the different tile template types please see this MSDN reference