text:  Azure Mobile Services to leverage data in a Xamarin.iOS.iOS:
  This tutorial requires the Azure Mobile Services Component, XCode 6.0, Xamarin.iOS, and iOS 7.0 or later versions.
  To complete this tutorial, you need an Azure account. If you don't have an account, you can create a free trial account in just a couple of minutes. For details, see Azure Free Trial.
  This tutorial is built on the GetStartedWithData app, which is a Xamarin.iOS app. The UI for this app is identical to the app generated by the Mobile Services Xamarin.iOS quickstart, except that added items are stored locally in memory.
  Download the GetStartedWithData app.
  In Xamarin Studio, open the downloaded project and examine the TodoService class.
  Notice that there are several // TODO comments that specify the steps you must take to make this app work with your mobile service.
  Go to the Run menu and choose Start Without Debugging to start the app.
  In the app, type some text in the text box, then click the + button.
  Notice that the saved text.
  In the Solution view in Xamarin Studio, open the TodoService class and uncomment the following using statement:
  using
  using Microsoft.WindowsAzure.MobileServices;
  In the Management Portal, click Mobile Services, and then click the mobile service you just created.
  Click the Dashboard tab and make a note of the Site URL, then click Manage keys and make a note of the Application key.
  In the Constants class, uncomment the following constants:
  public const string ApplicationURL = @"AppUrl";
  public const string ApplicationKey = @"AppKey";
  Replace AppUrl and AppKey in the above constants with the values you found above in the Management Portal.
  In the TodoService class, uncomment the following line of code:
  private MobileServiceClient client;
  This creates a property that represents the MobileServiceClient that connects to the service
  private IMobileServiceTable<TodoItem> todoTable;
  This creates a property representation for your mobile services table.
  Uncomment the following lines in the TodoService constructor:
  // TODO:: Uncomment these lines to use Mobile Services
  client = new MobileServiceClient(Constants.ApplicationURL, Constants.ApplicationKey).WithFilter(this);
  todoTable = client.GetTable<TodoItem>();
  This creates an instance of the Mobile Services client and creates the TodoItem table instance.
  Uncomment the following lines in the RefreshDataAsync method in TodoService
  // TODO:: Uncomment these lines to use Mobile Services
  try
  {
  // This code refreshes the entries in the list view by querying the TodoItems table.
  // The query excludes completed TodoItems
  Items = await todoTable
  .Where (todoItem => todoItem.Complete == false).ToListAsync();
  }
  catch (MobileServiceInvalidOperationException e)
  {
  Console.Error.WriteLine (@"ERROR {0}", e.Message);
  return null;
  }
  This creates a query to return all tasks that have not yet been completed.
  Locate the InsertTodoItemAsync method, and uncomment the following line:
  await todoTable.InsertAsync(todoItem);
  This code sends an insert request to the mobile service.
  Locate the CompleteItemAsync method, and uncomment the following line:
  await todoTable.UpdateAsync(item);
  This code removes TodoItems after they are marked as completed.
  Now that the app has been updated to use Mobile Services for backend storage, it's time to test the app against Mobile Services.
  In Xamarin Studio, select an emulator or device to deploy to from one of the primary comboboxes, then go to the Run menu and select Start WithoutDebugging to start the app.
  This executes your Azure Mobile Services client, built with Xamarin.iOS, that queries items from your mobile service.
  As before, type text in the textbox, and then click the + button...iOS.
  Download the completed example project. Be sure to update the applicationURL and applicationKey variables with your own Azure settings.
  This tutorial demonstrated the basics of enabling an iOS iOS tutorials:
  Get started with authentication Learn how to authenticate users of your app.
  Get started with push notifications Learn how to send a very basic push notification to your app with Mobile Services.