How to update specific values in XML document with C# -

i asked similar question had problems proposed solution, rephrasing differently sample code time. have xml file stores data players of game. need find player periodically xml file , update associated data specific player plays game:

    <?xml version="1.0"?> <playerstats xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xmlns:xsd="http://www.w3.org/2001/xmlschema">   <player>     <name>jack</name>     <wincount>3</wincount>     <playcount>9</playcount>     <balance>500</balance>   </player>    <player>     <name>john</name>     <wincount>3</wincount>     <playcount>9</playcount>     <balance>940</balance>   </player>  </playerstats> 

i need code identify specific player (example, john) , update wincount, playcount, , balance numbers based on c# variables. here sample c# code working with:

    xmldocument doc = new xmldocument();     doc.load(xmlfilepath);     xmlnode player;     xmlnode root = doc.documentelement;      // below correctly pulls data specific player     player = root.selectsinglenode("descendant::player[name='"+form1.strplayername+"']");      // "inner xml" player = "<name>john</name><wincount>3</wincount><playcount>9</playcount><balance>940</balance>"      // since "balance" last, tried using "lastchild" , code below worked     player.lastchild.innertext = form1.decbalance.tostring();  //updates balance succesfully      doc.save(xmlfilepath); 

so works "lastchild", how change "wincount", "playcount", , "balance" without referencing them either first or last? got suggestions before using linq , xml serialization, etc., caused problems , not understand linq yet. want use xmldocument bc feel code 95% of way there , missing easy. new c# using of code above make life easier if possible. thanks,

i believe can this:

player["wincount"].innertext = form1.wincount.tostring(); player["playcount"].innertext = form1.playcount.tostring(); player["balance"].innertext = form1.decbalance.tostring(); 

documentation here.