Building Location-Aware Applications with Windows 7 and .NETGavin GearProgram ManagerMicrosoft Corporation

CL17

Garmin 60csx

Bing Maps vs. Reality Part 1

Real Boiling Lake Bing Maps 3D Boiling Lake

Bing Maps vs. Reality Part 2

Real Seattle Bing Maps 3D Seattle

What About Location Awareness on the PC?

Location Challenges on the PC (pre-Windows 7)

> COM ports> Lack security model> Exclusive application access model> Proprietary data formats

> Vertical solutions and Proprietary APIs

Demo: Tour of Location in Windows 7

demo

Windows 7 Sensor PlatformC++ Sensor App

Sensor API

C++ Sensor App

Sensor Devices

Windows 7Sensor andLocation Platform

Applications

Sensor MCU

Sensor Driver

Sensor Class Extension

Sensor MCU

Sensor Driver

Accelerometer Ambient Light Sensor

Windows 7 Location Platform

Default WANGPS Lookup

Location GadgetC++ Location App

LocationSensors

Windows 7Sensor andLocation Platform

Applications

Win32 COM IDispatch

Location API

Sensor API

Lookup

Windows 7 Location Data Flow

Default WANGPS

Location GadgetC++ Location App

LocationSensors

Windows 7Sensor andLocation Platform

Applications

Win32 COM IDispatch

Location API

Sensor API

Windows 7 Location Data Flow

Default WANGPS Lookup

Location GadgetC++ Location App

LocationSensors

Windows 7Sensor andLocation Platform

Applications

Win32 COM IDispatch

Location API

Sensor API

Windows 7 Location Summary> Standard platform for devices

and applications> Windows 7 Sensor DDI (devices)> Windows 7 Location API (applications)

> Security model and UI> Simultaneous application access> Standardized data types

> Geo-position > Civic address

.NET 4 Will Include a Managed Location API!

AnnouncingNew for Beta 2

.NET 4 Location API

Default WANGPS Lookup

.NET Location APP

Windows 7 Location API

.NET Location APP

LocationSensors

Windows 7Location API

.NET Applications

.NET 4 Location API.NET Framework

Sensor API

New Assembly: System.Device.dll

> Represents the device/PC> Root namespace: System.Device> Installed by default with .NET 4> Supported in Visual Studio 2010

System.Device.Location Object Model

GeoLocationProvider

GeoCoordinate

CivicAddress

GeoLocation

GeoLocationStatus

High-Level Overview

GeoLocationProvider Overview> Properties

> GeoLocation Location> GeoLocationStatus Status> Double MovementThreshold

> Methods> GeoLocationProvider() +1 overload> Start()> Stop()

> Events> LocationChanged> StatusChanged

> Implements INotifyPropertyChanged

GeoLocation Overview> Properties

> Double Heading> Double Speed> GeoCoordinate Coordinate> CivicAddress Address> DateTimeOffset Timestamp

> Methods> GeoLocation(GeoCoordinate) + 3

overloads> Members

> GeoLocation Unknown

GeoCoordinate Overview> Properties

> Double Latitude> Double Longitude> Double HorizontalAccuracy> Double VerticalAccuracy> Double Altitude

> Methods> GeoCoordinate(latitude, longitude) + 3

overloads> Members

> GeoCoordinate Unknown

CivicAddress Overview> Properties

> String AddressLine1> String AddressLine2> String Building> String City> String CountryRegion> String FloorLevel> String PostalCode> String StateProvince

> Methods> CivicAddress(String addressLine1, …)

> Members> CivicAddress Unknown

Writing a Location-Aware .NET application

Restaurant Finder WPF App – “Suburban Fork”

Suburban Fork Application Architecture

Main Window

Location View Model Map Layer

Globe

Flag Panel

Databinding Com

man

dsLocation Source

Model View Model View

Location Coding Considerations> Hooking up System.Device.dll> Using GeoLocationProvider

> Accessing Location data and updates> Handling status and status updates

> Conditional permissions prompting

Coding Exercise

Adding location-awareness to the Suburban Fork restaurant finder application

.NET 4 Location Summary> .NET 4 includes a location API as of

Beta 2> Assembly: System.Device.dll> Namespace: System.Device

> Windows 7 light up feature (Location data not available down-level)

> Provides seamless access to default location, as well as hardware and software location providers

Changes to Come in .NET 4 RC Build> Changes in RC Location API

> Name changes> Address data access changes> Separation of status and permissions> Other minor changes

Call to Action> Install Windows 7> Install Visual Studio .NET 2010 Beta 2> Build Location-aware applications

using .NET 4> Provide feedback to Microsoft about

your experiences

Resources> WHDC site for Sensors/Location

www.microsoft.com/WHDC/Sensors> Documentation> Whitepapers> Developer forum> Blogs

> Location inquiries aliaslocext@microsoft.com

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