Windows Phone 8: XML Read issue -


okay im looking @ xml document (http://dev.virtualearth.net/rest/v1/locations/53.8100,-1.5500?o=xml&key=#)

its getting downloaded app correctly keep getting error here

lang = resultelements.element("resourcesets") _ .element("resourceset") _ .element("resources") _ .element("location") _ .element("address") _ .descendants("postalcode").value.tostring()

anybody know why?

the reason you're getting null reference exception because didn't handle namespace in xml document:

<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"> 

there's 3 namespaces, 2 of them assigned prefixes. 1 want last one:

xmlns="http://schemas.microsoft.com/search/local/ws/rest/v1" 

the following code trick:

dim resultelements xdocument = xdocument.load("http://dev.virtualearth.net/rest/v1/locations/53.8100,-1.5500?o=xml&key=agqtkdaecz38runibck_gotwrok3a3jlscyr9dfmkd7mrmn0t0c6g9lcay1klmv3")  dim ns xnamespace = "http://schemas.microsoft.com/search/local/ws/rest/v1"  dim lang = (resultelements.descendants(ns + "postalcode").firstordefault()).value 

when there namespace, need prepend appropriate namespace element name - i.e., ns + "postalcode". above code snippet returns "ls2 9".

firstordefault() return first item matches, or default value if no items match.

if expect have collection of postal codes, can remove firstordefault() , iterate through returned collection, well. this:

dim lang = resultelements.descendants(ns + "postalcode")  each postalcode xelement in lang     console.writeline(postalcode.value) next 

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