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Building Mobile Apps with a Mobile Services .NET Backend

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Presentation from TechDays Netherlands 2014 on using the newly announced .NET backend for Azure Mobile Services to build mobile applications, and on using the Offline Sync preview in Windows Store …

Presentation from TechDays Netherlands 2014 on using the newly announced .NET backend for Azure Mobile Services to build mobile applications, and on using the Offline Sync preview in Windows Store apps.

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  • 1. Laat ons weten wat u vindt van deze sessie! Vul de evaluatie in via www.techdaysapp.nl en maak kans op een van de 20 prijzen*. Prijswinnaars worden bekend gemaakt via Twitter (#TechDaysNL). Gebruik hiervoor de code op uw badge. Let us know how you feel about this session! Give your feedback via www.techdaysapp.nl and possibly win one of the 20 prizes*. Winners will be announced via Twitter (#TechDaysNL). Use your personal code on your badge. * Over de uitslag kan niet worden gecorrespondeerd, prijzen zijn voorbeelden – All results are final, prizes are examples
  • 2. Building Mobile Apps with a Mobile Services .NET Backend Sasha Goldshtein CTO, Sela Group Microsoft C# MVP, Azure MRS, Azure Insider blog.sashag.net @goldshtn
  • 3. Who are we? App developers What do we hate? Backends
  • 4. Azure Mobile Services is a backend for your mobile apps … that has a free tier … and cloud scale … and support for all mobile platforms
  • 5. This talk will focus on the .NET backend and the C# clients … the Node.js backend with iOS/Android clients was discussed earlier today
  • 6. Platforms and Features Platforms (client libraries) • Windows Phone • Windows 8 • Xamarin • iOS • Android • HTML/JavaScript • PhoneGap Features • Data and queries • Push notifications • Authentication • Data access customization • Custom API • Offline sync • Mass push • Remote debugging • Local deployment for testing
  • 7. System Diagram Microsoft Azure SQL Database ASP.NET Web API backend Microsoft Push Notification Service Facebook Auth Provider Windows Notification Service Microsoft Auth Provider
  • 8. Data Query var service = new MobileServiceClient( “http://rentahome.azure-mobile.net/”, “<APPLICATION KEY>” ); var table = service.GetTable<Apartment>(); List<Apartment> apartments = await table.Where(a => a.Rented == false) .ToListAsync();
  • 9. Authentication var user = await service.LoginAsync( MobileAuthenticationProvider.Facebook);
  • 10. Client-Side Push Registration var channel = await PushNotificationChannelManager. CreatePushNotificationChannelForApplicationAsync(); await service.GetPush() .RegisterNativeAsync(channel.Uri);
  • 11. Visual Studio Support
  • 12. Server-Side Push public async Task<IHTTPActionResult> PostApartment( Apartment apartment) { var inserted = await InsertAsync(apartment); var push = new ApplePushMessage( “Added apartment at ” + apartment.Address, null); await Services.Push.SendAsync(push); return CreatedAtRoute(“Tables”, new { id = inserted.Id }, inserted); }
  • 13. Server-Side Authorization [RequiresAuthorization(AuthorizationLevel.User)] public async Task<IHTTPActionResult> PostApartment( Apartment apartment) { var inserted = await InsertAsync(apartment); return CreatedAtRoute(“Tables”, new { id = inserted.Id }, inserted); }
  • 14. Demo Building the “Rent a Home” Windows Store App with the Mobile Services .NET Backend
  • 15. Offline Sync Support Currently in Preview, only for Windows Store apps Uses SQLite backing store Manual push and pull, no auto-sync Conflict detection and management
  • 16. Preparing Data Model for Offline Sync Support public class Apartment { public string Id { get; set; } public bool Rented { get; set; } public string Address { get; set; } public uint Bedrooms { get; set; } [Version] public string Version { get; set; } }
  • 17. Initializing Sync Table and Store var table = service.GetSyncTable<Apartment>(); if (!service.SyncContext.IsInitialized) { var store = new MobileServiceSQLiteStore(“my.db”); store.DefineTable<Apartment>() await service.SyncContext.InitializeAsync(store, new MobileServiceSyncHandler()); }
  • 18. Pull and Push // May throw if there is a connection problem await table.PullAsync(); var list = await table.OrderBy(a => a.Bedrooms) .ToListAsync(); table.Insert(new Apartment(...)); // May throw if there is a connection problem // or a conflict, cf. MobileServicePushFailedException service.SyncContext.PushAsync();
  • 19. Demo Adding Offline Sync Support
  • 20. Questions? Sasha Goldshtein blog.sashag.net @goldshtn
  • 21. Laat ons weten wat u vindt van deze sessie! Vul de evaluatie in via www.techdaysapp.nl en maak kans op een van de 20 prijzen*. Prijswinnaars worden bekend gemaakt via Twitter (#TechDaysNL). Gebruik hiervoor de code op uw badge. Let us know how you feel about this session! Give your feedback via www.techdaysapp.nl and possibly win one of the 20 prizes*. Winners will be announced via Twitter (#TechDaysNL). Use your personal code on your badge. * Over de uitslag kan niet worden gecorrespondeerd, prijzen zijn voorbeelden – All results are final, prizes are examples

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