Implement GPS, location API and call Web Services in Windows Phone 7

View code

Mainpage. XAML:

<Phone: phoneapplicationpage
X: class = "  Geopositionwebservice. mainpage  " 
Xmlns = "  Http://schemas.microsoft.com/winfx/2006/xaml/presentation  " 
Xmlns: x = "  Http://schemas.microsoft.com/winfx/2006/xaml  " 
Xmlns: Phone ="  CLR-namespace: Microsoft. Phone. controls; Assembly = Microsoft. Phone  " 
Xmlns: shell = "  CLR-namespace: Microsoft. Phone. Shell; Assembly = Microsoft. Phone  " 
Xmlns: D = "  Http://schemas.microsoft.com/expression/blend/2008  " 
Xmlns: MC = "  Http://schemas.openxmlformats.org/markup-compatibility/2006  " 
MC: ignorable = "  D  " D: designwidth = "  480  " D: designheight = "  768  " 
Fontfamily = "  {Staticresource phonefontfamilynormal}  " 
Fontsize = " {Staticresource phonefontsizenormal}  " 
Foreground = "  {Staticresource phoneforegroundbrush}  " 
Supportedorientations = "  Portrait  " Orientation = "  Portrait  " 
Shell: systemtray. isvisible = "  True " >

<! -- Layoutroot Is The root Grid Where All page content Is Placed -->
<Grid X: Name = "  Layoutroot  " Background = "  Transparent  " >
<Grid. rowdefinitions>
<Rowdefinition Height ="  Auto  " />
<Rowdefinition Height = "  *  " />
</Grid. rowdefinitions>

<! -- Titlepanel contains the name of the application and page title -->
<Stackpanel X: Name = "  Titlepanel  " Grid. Row = "  0 " Margin = "    " >
<Textblock X: Name = "  Applicationtitle  " TEXT = "  My application  " Style = "  {Staticresource phonetextnormalstyle}  " />
<Textblock X: Name ="  Pagetitle  " TEXT = "  Page name  " Margin = "  9,-7, 0, 0  " Style = "  {Staticresource phonetexttitle1style}  " />
</Stackpanel>

<! -- Contentpanel-place additional content here -->
<Grid X: Name = "  Contentpanel  " Grid. Row = "  1  " Margin = "  12, 0, 12, 0  " >
<Textblock Height = "  39  " Horizontalalignment = "  Left " Margin = "  12, 6, 0, 0  " Name = "  Textblock1  " TEXT = "" Verticalalignment = "  Top  " Width = "  438  " />
<Button content ="  Find me  " Height = "  72  " Horizontalalignment = "  Left  " Margin = "  272,51, 0, 0  " Name = "  Button1  " Verticalalignment = " Top  " Width = "  160  " Click = "  Button#click  " />
</GRID>
</GRID>

<! -- Sample Code showing usage of ApplicationBar -->
<! -- <Phone: phoneapplicationpage. ApplicationBar>
<Shell: ApplicationBar isvisible = "  True " Ismenuenabled = "  True  " >
<Shell: applicationbariconbutton iconuri = "  /Images/appbar_button1.png  " TEXT = "  Button 1  " />
<Shell: applicationbariconbutton iconuri = "  /Images/appbar_button2.png " TEXT = "  Button 2  " />
<Shell: ApplicationBar. menuitems>
<Shell: applicationbarmenuitem text = "  Menuitem 1  " />
<Shell: applicationbarmenuitem text = "  Menuitem 2  " />
</Shell: ApplicationBar. menuitems>
</Shell: ApplicationBar>
</Phone: phoneapplicationpage. ApplicationBar> -->

</Phone: phoneapplicationpage>

View code

Mainpage. XAML. CS

 Using System;
 Using System. Collections. Generic;
 Using System. LINQ;
 Using System. net;
 Using System. windows;
 Using System. Windows. controls;
 Using System. Windows. documents;
 Using System. Windows. input;
 Using System. Windows. Media;
 Using System. Windows. Media. animation;
 Using System. Windows. shapes;
 Using Microsoft. Phone. controls;
 Using System. device. location;

 Namespace Geopositionwebservice
{
 Public   Partial   Class Mainpage: phoneapplicationpage
{
 //  Constructor  
          Public Mainpage ()
{
Initializecomponent ();
}

 Private   Void Button#click ( Object Sender, routedeventargs E)
{
Geocoordinatewatcher mywatcher = New Geocoordinatewatcher ();
 VaR Myposition = mywatcher. position;
 //  Hello, a friend from Wuhan. Your current latitude is 30.5833, And the longitude is 114.2667.
  //  In this case, since we're not working with a device, I'll just
  //  Set a default value. If we cannot get the current location,
  //  Then we'll default to Wuhan.
 //  WebService URL:  Http://msrmaps.com/TerraService2.asmx  
              Double Latitude = 30.5833 ;
 Double Longpolling = 114.2667 ;
 If (! Myposition. Location. isunknown)
{
Latitude = myposition. Location. Latitude;
Longpolling = myposition. Location. longpolling;
}
Myterraservice. terraservicesoapclient client = New Myterraservice. terraservicesoapclient ();
Client. convertlonlatpttonearestplacecompleted + = New Eventhandler <myterraservice. convertlonlatpttonearestplacecompletedeventargs> (client_convertlonlatpttonearestplacecompleted );
Client. convertlonlatpttonearestplaceasync ( New Myterraservice. lonlatpt {lat = latitude, Lon = longpolling });
}

 Void Client_convertlonlatpttonearestplacecompleted ( Object Sender, myterraservice. convertlonlatpttonearestplacecompletedeventargs E)
{
 //  Throw new notimplementedexception ();  
 Textblock1.text = E. result;
}
}
}