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POBing maps Pushpins from XML Feed
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copied!<p>Ive been using this tutorial to try and display pushpins on a map: <a href="http://compiledexperience.com/windows-phone-7/tutorials/quake" rel="nofollow">http://compiledexperience.com/windows-phone-7/tutorials/quake</a></p> <p>Im almost there wit hthe help you you guys below, but </p> <p>If I replace my bits with the original bits (commented out parts) and then do 'Start debugging', I get an unhandled exception. If I continue debugging I see the map and the pushpins for a split second and then it quits out. I put back the original commented code and its fine... Let me know if you need anymore info. Im so frustrated at this :( Thanks once again.</p> <p>Callstack:</p> <blockquote> <p>QuakeML.dll!QuakeML.App.OnUnhandledException(object sender = {QuakeML.App}, System.Windows.ApplicationUnhandledExceptionEventArgs e = {System.Windows.ApplicationUnhandledExceptionEventArgs}) Line 37 + 0x5 bytes C# System.Windows.dll!MS.Internal.Error.CallApplicationUEHandler(System.Exception e = {"UIElement.Arrange(finalRect) cannot be called with Infinite or NaN values in finalRect. "}) + 0x30 bytes<br> System.Windows.dll!MS.Internal.Error.CallAUEHandler(uint hr = 2148474880, out uint bIsHandled = 0) + 0x6 bytes<br> [Native to Managed Transition] </p> </blockquote> <p>Current code:</p> <pre><code>namespace QuakeML { public partial class MainPage { public MainPage() { InitializeComponent(); Loaded += OnLoaded; } private void OnLoaded(object sender, RoutedEventArgs e) { LoadQuakes(); } private void LoadQuakes() { var webClient = new WebClient(); webClient.OpenReadCompleted += OnOpenReadCompleted; var uri = "http://www.tfl.gov.uk/tfl/businessandpartners/syndication/feed.aspx?email=mycomputer@clara.co.uk&feedId=3"; // var uri = "http://magma.geonet.org.nz/services/quake/quakeml/1.0.1/query?startDate=2010-09-03&endDate=2010-09-05&magnitudeLower={0:0.0}&magnitudeUpper=8"; webClient.OpenReadAsync(new Uri(uri, UriKind.Absolute)); } private void OnOpenReadCompleted(object sender, OpenReadCompletedEventArgs e) { var document = XDocument.Load(e.Result); if(document.Root == null) return; var xmlns = XNamespace.Get("http://www.tfl.gov.uk/tfl/syndication/namespaces/geo"); //var xmlns = XNamespace.Get("http://quakeml.org/xmlns/quakeml/1.0"); var events = from ev in document.Descendants("item") select new { Latitude = Convert.ToDouble(ev.Element(xmlns + "Point").Element(xmlns + "lat").Value), Longitude = Convert.ToDouble(ev.Element(xmlns + "Point").Element(xmlns + "long").Value), }; //var events = from ev in document.Descendants(xmlns + "event") // select new // { // Latitude = Convert.ToDouble(ev.Element(xmlns + "origin").Element(xmlns + "latitude").Element(xmlns + "value").Value), // Longitude = Convert.ToDouble(ev.Element(xmlns + "origin").Element(xmlns + "longitude").Element(xmlns + "value").Value), // }; QuakeLayer.Children.Clear(); foreach(var ev in events) { var accentBrush = (Brush)Application.Current.Resources["PhoneAccentBrush"]; var pin = new Pushpin { Location = new GeoCoordinate { Latitude = ev.Latitude, Longitude = ev.Longitude }, Background = accentBrush, }; QuakeLayer.AddChild(pin, pin.Location); } } private void OnRefresh(object sender, RoutedEventArgs e) { LoadQuakes(); } } } </code></pre> <p>Map item on mainpage:</p> <p> </p>

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