I'm calling the Bing Maps Service to return some XML here开发者_JAVA百科:
http://dev.virtualearth.net/REST/v1/Locations/Encoded_Address?o=xml&key=Maps_Key
For the life of me, I can't seem to get the Longitude and Latitude using Linq! It always returns null
. Here's the code I'm using (I've used Atlanta, GA as an example):
xml = XElement.Load(url); // url is as above
var locations = from l in xml.Descendants( "Location" )
select l;
// Output to Test
foreach(var location in xml.Descendants("Location")){
// We NEVER get in here.
Console.WriteLine( "Lat: " + location.Descendants("Latitude").First().Value );
Console.WriteLine( "Long: " + location.Descendants("Longitude").First().Value);
Console.ReadLine();
}
I've also tried adding a namespace:
XNamespace xn = "http://schemas.microsoft.com/search/local/ws/rest/v1";
xml.Descendants(xn + "Location"))
But NO go. What am I doing wrong???
Here's the relevant XML fragment (only relevant parts are here)
<Response xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns="http://schemas.microsoft.com/search/local/ws/rest/v1">
<ResourceSets>
<ResourceSet>
<EstimatedTotal>1</EstimatedTotal>
<Resources>
<Location>
<Name>Atlanta, GA</Name>
<Point>
<Latitude>33.748315</Latitude>
<Longitude>-84.39111</Longitude>
</Point>
<!-- other stuff here -->
</Location>
</Resources>
</ResourceSet>
</ResourceSets>
</Response>
You'll have to include namespace in all places as shown below.
// Output to Test
foreach(var location in xml.Descendants(xn +"Location")){
// NOW WE GET IN HERE.
Console.WriteLine( "Lat: " + location.Descendants(xn +"Latitude").First().Value );
Console.WriteLine( "Long: " + location.Descendants(xn + "Longitude").First().Value);
Console.ReadLine();
}
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