A Developer's View of Windows 8

A Developers View of Windows8Andrei Marukovichandrei.marukovich@lunarfrog.com@taggedfrog

Agenda• Developing for Classic Desktop• Introduction to Metro UI• Building Metro applications 2

Is .NET dead? vs 3

Windows 8 platform HTML / C# / VB JS C / C++ or SL Metro-style APIs CLR Internet Win32 Explorer Windows Kernel Services 4

.NET 4.5 Framework• Pre-installed in Windows 8• Windows XP is not supported• Use 4.0 runtime (same as 3.5 use 2.0 RT) 5

Asynchronous development• New data structures• New async APIs• New keywords in C# and VB • async • await 6

DemoAsync and Await 7

If it runs on a Windows 7,itll run on Windows 8 PC 8

Demo Metro UI 9

App suspension• Inactive apps are suspended by the OS: • Apps remain in memory • No CPU, Disk or Network consumed • All threads are suspended 10

App lifecycle states Not started Running Suspending Suspended 11

DemoApp lifecycle 12

Windows 8 platform HTML / C# / VB JS Languages C / C++ or SL WinRT APIs CLR InternetCommunication Graphics/Media Devices Win32 Explorer Application Model Windows Kernel Services 13

WinRT• Object-oriented Win32 replacement• Native, written in C++• Based on COM• .NET-like metadata• Any language can be used to extend it• Async everywhere (50ms rule) 14

Windows 8 platformHTML / CSS DirectX XAML HTML / C# / VB JS C / C++ JavaScript C# / VB or C / C++IE 10 Engine CLR SL WinRT APIs CLR InternetCommunication Graphics/Media Devices Win32 Explorer Application Model Windows Kernel Services 15

.NET Metro profile• Subset of Client Profile • No Remoting • No System.Data • No System.Web • No private reflection, no Emit • Some APIs replaced with async versions • Some .NET classes moved to WinRT 16

XAML for Metro• New variation of XAML, close to Silverlight• Standard controls • Button, TextBox, ComboBox, CheckBox, etc.• New controls • ProgressRing • FlipView • GridView • ListView 17

Demo• Image Browser • Scans Pictures library and shows all the keywords • Allows to select a keyword • Shows all the images for the keyword• Snapping• Search integration• FilePicker integration 18

DemoDeveloping Windows 8 apps 19

App packaging • .appx file format (zip) Files / Assets • Compiled app and resources • App Manifest AppXManifest.xml • BlockMap BlockMap • Digital signature Signature .appx package 20

Installation• Declarative approach• Everything installed in one folder• Installation is on per-user basis • Installation for first user • Registration for the next• No custom actions• Automatic updates 21

How to start• Main start point: http://dev.windows.com/ • Samples • Metro style app reference and APIs • Forums • Windows 8 Developer Preview with developer tools (x64)• Installation on a VM • VirtualBox 4.1.2+ • VMware Workstation 8.0+ • Hyper-V 22

Links• BUILD conference videos • http://channel9.msdn.com/Events/BUILD/BUILD2011 • 8 Traits of Great Metro Style Apps (Jensen Harris)• Building Windows 8 blog • http://blogs.msdn.com/b/b8/ 23

Q&Alunarfrog.com/blog @taggedfrog 24

Thank you! 25

A Developer's View of Windows 8

by Andrei Marukovich on Dec 01, 2011

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A Developer’s View of Windows 8 — Presentation Transcript