vb.net - iterate through every xml node and append node and value to string -

i have following xml format,which kml file google map..

        <kml xmlns="http://www.opengis.net/kml/2.2">           <document>             <name>testdoc</name>             <style id="style1">               <polystyle>                 <fill>0</fill>               </polystyle>             </style>             <folder>               <name>folder1</name>               <placemark>                 <name>placemark1folder1</name>                 <lookat>                   <longitude>-122.0839597145766</longitude>                   <latitude>37.42222904525232</latitude>                 </lookat>               </placemark>               <placemark>                 <name>placemark2folder1</name>                 <lookat>                   <longitude>-101.083959</longitude>                   <latitude>26.422</latitude>                 </lookat>               </placemark>             </folder>             <folder>               <name>folder2</name>               <placemark>                 <name>placemark1folder2</name>                 <lookat>                   <longitude>-96.566556</longitude>                   <latitude>14.422</latitude>                 </lookat>               </placemark>             </folder>           </document>         </kml> 

i want concat xml string variable untill finds <folder> node

hence output string :

""<kml xmlns="http://www.opengis.net/kml/2.2"><document><name>testdoc</name><style id="style1"><polystyle><fill>0</fill></polystyle> </style>" 

i new xml ..plz help

ok got ...here solution

public sub concatxmltostring()         dim xmldoc xmldocument = new xmldocument()         '================================         'hard coded         '================================         dim concatstring string = "<?xml version=" & chr(34) & "1.0" & chr(34) & "encoding=" & chr(34) & "utf-8" & chr(34) & "?><kml xmlns=" & chr(34) & "http://www.opengis.net/kml/2.2" & chr(34) & ">"          xmldoc.load("e:\a01c.kml")         dim documentnodelist xmlnodelist = xmldoc.getelementsbytagname("document")         each documentnode xmlnode in documentnodelist             'xmldoc.parentnode.parentnode.removechild(childnode)             dim childnodelist xmlnodelist = documentnode.childnodes             each childnode xmlnode in childnodelist                 if childnode.name <> "folder"                     concatstring = concatstring & childnode.outerxml.replace("xmlns=""http://www.opengis.net/kml/2.2""", "")                 end if             next         next          concatstring = concatstring & "</document></kml>"          dim str string = xmldoc.innertext      end sub