2. Liven up your WP7 Apps with sweet “Mango” sauce
Jaime Rodriguez
Microsoft
@jaimerodriguez

3. A to-do app….

4. Tidy
DEMO

5. http://bit.ly/WP7AppsDoMore “Apps are smarter on Windows Phone.. Where
the same apps Do more”
Joe Belfiore, VP

6. Agenda

7. Local database SQL CE 4 Sandboxed LINQ to SQL Your App
Custom Data Context
App Objects
System.Data.Linq
Identity Management
Change Tracking
Update Processing
Object Materialization
Microsoft.Phone.Data.Internal
Core ADO.NET (System.Data)
SQLCE ADO.NET Provider (System.Data.SqlServerCe)
SQL CE DB

8. SQL CE
CODE WALK-THROUGH

9. LINQ To SQL Mapping Attributes
Atrribute
Example
Description
TableAttribute
[Table]
Designates a class as an entity class that is associated with a database table.
ColumnAttribute
[Column(IsPrimaryKey = true)]
Associates a class with a column in a database table. IsPrimaryKey specifies the primary key, for which an index is created.
IndexAttribute
[Index(Name="LastNameIndex", Columns="LastName")]
Written at the table level, designates the column of a database table as a secondary index.
AssociationAttribute
[Association(Storage="ThisEntityRefName", ThisKey="ThisEntityID", OtherKey="TargetEntityID")]
Designates a property to represent an association, such as a foreign key to primary key association.

10. Lessons and tips MS recommends code first approach SQL Metal works too
Design object model
Apply Attributes
SQL Metal works too
Leverage background threads
Keep changes small (aka save often)
Let SQL do the work

11. Multi-tasking design principles
Delightful and Responsive UX
Battery Friendly
Health
Never Regret App Install
Network Conscience UX
Integrated Feel
Hardened Services

12. Multi-tasking Options
Background Transfer Service
Background Audio
Background Agents
Periodic
On Idle
Alarms and Reminders

13. Background Transfer Service
Start in foreground, complete in background, even if app is closed
Queue (of 5) persists across reboots
Single service for many apps, FIFO
Download ~20 MB ( > over Wi-Fi)
Upload Size ~4 MB (limit to come)
Transfers to Isolated Storage
Queue size limit = 5
Queue APIs (Add, Remove, Query status)

14. Background Transfer
CODE WALK-THROUGH

15. Notifications
Time-based, on-phone notifications
Supports Alerts & Reminders
Persist across reboots
Adheres to user settings
Consistent with phone UX

16. Alarms vs Reminders? Alarms Reminders Modal Rich information
Snooze and Dismiss
Sound customization
No app invocation
No stacking
Rich information
Integrates with other reminders
Snooze and Dismiss
Launch app
Follows the phones global settings

17. Reminders
CODE WALK-THROUGH

18. Live Tile improvements
Local Tile APIs
Full control of ALL properties
Multiple tiles per app
Create,Update/Delete/Query
Launches direct to Uri
Application Tile
Launches main app experience
Secondary Tile
Launches world news page
Secondary Tile
Launches local news page

19. Live Tiles – Local Tile API (2)
Back of tile updates
Full control of all properties when your app is in the foreground or background
Content, Title, Background
Flips from front to back at random interval
Smart logic to make flips asynchronous
Title
Content
Background
Content string is bigger

20. Live tiles
CODE WALK-THROUGH

21. Generic Agents Periodic Agents On Idle Agents Occurrence Occurrence
Every 30 min
Duration
~15 seconds
Constraints
<= 5 MB Memory
<=10% CPU
On Idle Agents
Occurrence
External power, non-cell network
Duration
10 minutes
Constraints
<= 5MB Memory
All of this is requirements can change before RTM,
but should not change too much

22. Background Agent Functionality
Allowed
Restricted
Tiles
Toast
Location
Network
R/W ISO store
Sockets
Most framework APIs
Display UI
XNA libraries
Microphone and Camera
Sensors
Play audio (may only use background audio APIs)

23. Background Agents
CODE WALK-THROUGH

24. Background Tips & Lessons
Renew often
Known issues in beta build
SQL CE & memory
Debugger (prompts & memory)
IsEnabled flag
One agent for multiple tasks

25. A “Mango” to-do app.. Local database + LINQ to SQL
Alarms and Reminders
Live tiles (secondary tiles)
Navigation
Background processing
FAS, File transfer, Agents

26. Take on the challenge!! Windows Phone “Mango” Training Kit
Tidy Labs:
SQL,
Tiles
BTS
Background Agents
Other labs
Photo fun
SL + XNA
Choosers & Launchers
Push

27. Thank You!
Q&A
@jaimerodriguez

28. © 2008 Microsoft Corporation. All rights reserved
© 2008 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.