This presentation is for Virtual Tech Conference by Microsoft MVPs.

1. Create Cross Platform apps effectively
with Portable Class Libraries

2. Fb.com/f5debug
@f5debug

3. Agenda

4. Cross Platform Applications
• .Net Framework Apps
• Windows Phone
• Windows 8
• Xbox
• Silverlight
• iOS
• Android

5. Challenges in building Native Apps
• Multiple Operating Systems
• MultipleTeams and Products
• Feature Fragmentation
• Uniform User Experience
• Cost Factor

6. Cross Platform Applications
When to use
• Low Performance
Applications
• Apps which makes a
replication of Web
Applications
• Restful Applications
• Targeting multiple
platforms
When not to use
• High Performance
Applications
• More Native features
like OS integration,
device specific
• Tightly coupled with
Network
communications

7. Portable Class Libraries
• Introduced officially withVisual Studio 2012
• Library that runs on multiple platforms
• Single code base for multiple target platforms
• Avoid multiple copies of the same code
• Share code across platforms
• Can select the target framework out of the
box

8. Portable Class Libraries
Portable Class Library project supports a
subset of assemblies from

9. Target Platforms

10. Portable Class Libraries
Code Files for reusable classes
UX.SilverlightUX.Phone UX.WindowsUX.Web
Common PCL

11. What can I use and where?

12. Portable Class Libraries
• One source
• One project
• One binary
Multiple
platforms!

13. Mobile Apps with Windows Phone 8
Windows Phone Market Place
SeparateVisual StudioTemplates
Different application Layers and Tiers
Separate Emulators and device
specific deployments

14. Modern Apps with Windows 8
Windows Store Market Place
SeparateVisual StudioTemplates with
support forWeb developers
Different application Layers and Tiers
Separate Emulators and device
specific deployments

15. Client
Mobile and Modern Clients
Server

16. Mobile Apps with Xamarin
C# everywhere
SDK and Studio available for both
Windows and MAC
Build Apps for iOS and Android as
well
Single code base for all platforms
Separate Emulators and device
specific deployments

17. Cross platform apps with Xamarin
Xamarin

18. Model-View-ViewModel (MVVM)
Views
How to display information
Written in XAML
View Models
What information to display
Flow of interaction
Models
Data objects
Business logic
Etc.
Platform-specific
Portable
References
Databinds

19. MVVM in Cross-platform app architecture
Reference Reference

21. Resources
http://bit.ly/18T5Hal
http://bit.ly/16Gwzod
www.f5debug.net
http://bit.ly/13oyq2v
Portable Class Libraries on Channel9 @ http://bit.ly/1cqtMnO

22. Question & Answers

23. Microsoft Tag
Scan theTag
to reach me directly
in case of any
questions