1. 01 | Building Windows Store Apps with XAML Part 1
Daren May | President (CRANK211)
Jerry Nixon | Developer Evangelist (Colorado)

2. Module Agenda
Windows Design Language
Windows Platform Features

3. Windows Live

4. Live SDK for Windows 8.1 Uses OAuth 2.0, JSON and REST APIs
Simplifies log in and token management
Provides shims & UI for interacting endpoints
The SDK provides access to:
SkyDrive
Outlook.com
Skype

5. Microsoft Account

6. Microsoft account Microsoft account Guidelines Authentication
Personalization
Information
Scopes
wl.basic
wl.signin
Guidelines
Sign-in state
Enable sign-out

7. Microsoft Account

8. SkyDrive

9. SkyDrive overview
Microsoft’s cloud storage solution for files and photo sharing
Guidelines for using SkyDrive in Windows 8 Apps
Upload data in response to user action
Apps are allowed to store data without user interaction
Use SkyDrive for what it does best
Documents, photos, etc.
Don’t undermine trust
Respect user security and privacy
Warn if data is public, etc.

10. Where to store app data in SkyDrive
Don’t scatter data around SkyDrive
Follow this pattern:
[SkyDrive root]
Sub folder: ApplicationData
Sub folder: [Application Name] ([Publisher Name or Company Name])
Files…

11. SkyDrive API Core Concepts
Interact with files using HTTP operations:
POST / PUT to upload
GET to download
MOVE / COPY to move or copy without downloading
The SDK wrappers these operations for you:
LiveConnectClient.PostAsync
LiveConnectClient.GetAsync
Etc.
Permissions
Inherited from parent object up the folder hierarchy

12. Useful folder and file properties
id - prefixed with file or folder
i.e. “file.a6b2a7e8f2515e5e.A6B2A7E8F2515E5E!126”
name – user supplied display name
i.e. “EpisodeNotes.txt”
description
type – file, folder, album, etc.
source – if a file, the path to download the file

13. Working with SkyDrive API
Important types:
LiveConnectSession
LiveConnectClient
Requires a valid session
Required scope:
wl.skydrive - Read access
wl.skydrive_update – read and write access
LiveOperationResult
contains a dynamic dictionary containing resultant key/value pairs

14. Retrieving file or folder properties
Supply the itemId as either an id or one of the few friendly names:
file.a6b2a7e8f2515e5e.A6B2A7E8F2515E5E!126
/me/skydrive

15. Result properties can be access via dynamic
Warning: no type safety or compiler checks!

16. Understanding folder and file hierarchy
Some folders are accessed by Folder ID
Example: folder.a6b2a7e8f2515e5e.A6B2A7E8F2515E5E!126
Some folders are accessed by name
/me - details about the signed in user
/me/skydrive – root of your SkyDrive folder
/me/calendars
/me/contacts
/me/events
List files by obtaining the containing folder id

17. Download a file: Step 1 : Get folders of “/me/skydrive”
Imagine we want to download filename.txt:
/me/skydrive/directory1/directory2/filename.txt
In order to retrieve a list of files and folders contained in directory1 (and we don’t know directory1’s id), we first need to get a list of the folders in /me/skydrive

18. Download a file: Step 2 : Get “directory1” from list
Once we have the list of files and folders (from /me/skydrive), we can find directory1 and its id property:
id = folder.96a6fb5ab7b940c6.96A6FB5AB7B940C6!123

19. Download a file: Step 3 : Get folders of “directory1”
We use the Folder Id to find the folders in directory1, so we can find the id for directory2:

20. Download a file: Step 5 : Get files of “directory2”
We repeat the last few steps and get directory2’s id,
directory2Id = folder.bb1b4E12b9f9414f.BB1B4E12B9F9414F!231
We use can get a list of files (and folders) in directory2:

21. Download a file: Step 6 : Get “file.txt” file url
We can the find the properties for filename.txt and the path we need to download it:

22. Download a file: Step 7 : Create local target
Now we have the download path, we need to create a local StorageFile where we will write the downloaded file

23. Download a file: Step 8 : Create local target
Use the download path
Note: uses the background downloader

24. Get a file, recap Get folders of “/me/skydrive”
Get “directory1” from list
Get folders of “directory1”
Get “directory2” from list
Get files of “directory2”
Get “file.txt” file url
Create local target
Download to target

25. App Showcase

26. Module Review
Windows Design Language
Windows Platform Features