c# - How to return a subset of XElements inside parent XElement -

if have xml such following:

<validationresults>   <validationresult>          <scheme>scheme a</scheme>   </validationresult>   <validationresult>       <scheme>scheme b</scheme>   </validationresult>    

i want query using linq xml return:

<validationresults>   <validationresult>          <scheme>scheme a</scheme>   </validationresult>      </validationresults> 

if this:

....element("validationresults").elements("validaitonresult")                                 .where(x => x.element("scheme").value == "scheme a"); 

i return only:

 <validationresult>          <scheme>scheme a</scheme>  </validationresult>   

then creating parent again , adding children it, not seem correct:

var parentelement = new xelement("validationresults"); var childelements = //get above  parentelement.add(childelements); 

how return queried subset of elements inside it's original parent?

your current approach seems simplest 1 me, although done in single statement as:

var element = new xelement("validationresults",     doc.element("validationresults")        .elements("validationresult")        .where(x => x.element("scheme").value == "scheme a"))); 

assuming don't want modify existing document, either have come new "root" validation results element or need clone existing 1 , remove you're not interested in. copying in elements want seems simpler pruning out don't want.

of course, avoid duplication of string literal pretty - extract constant somewhere, can make sure you're creating new element same name old one.