C# XML find first Element descendants -


looking find categoryid , categoryname first item. return no products.

xml looks 

<finditemsbykeywordsresponse xmlns="http://...">    <ack>success</ack>    <version>1.13.0</version>    <timestamp>2016-11-10t17:48:21.321z</timestamp>    <searchresult count="1">       <item>         <itemid>12354</itemid>         <title>abcd#</title>         <globalid>ddd</globalid>         <primarycategory>           <categoryid>**1234**</categoryid>           <categoryname>**catg nameee**</categoryname>         </primarycategory>       </item>    </searchresult>    <paginationoutput>    </paginationoutput> </finditemsbykeywordsresponse>

full xml here

because root element has namespace defined should when searching descendant items specify namespace:

xnamespace ns = @"http://www.ebay.com/marketplace/search/v1/services"; var result = xdocument.load("data.xml")           .descendants(ns + "item")           .firstordefault()?.element(ns + "primarycategory");  var categoryid = result?.element(ns + "categoryid")?.value; var categoryname = result?.element(ns + "categoryname")?.value;

also can use c# 6.0 null propagation (?:) retrieve <primarycategory> in more elegant way. keep in mind if not have <item> tag or <primarycategory> tag result equal null

in addition might make more sense try , find first <item> answers predicate. if case change .firstordefault() with: .firstordefault(item => item.element("itemid").value == "12345") example


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