xml - select XElements with xmlns -

how select element xmlns specified? need select include/fragment element. i've tried adding http://schemas.microsoft.com/wix/2006/wi before element names, doesn't work. in xmldocument there namespacemanager functionality, don't see same stuff in xdocument. how select element xmlns?

<include xmlns="http://schemas.microsoft.com/wix/2006/wi">     <fragment/> </include> 

i've tried:

ienumerable<xelement> fragments = d.element("include").elements("fragment"); 

and

const string xmlns="http://schemas.microsoft.com/wix/2006/wi/"; ienumerable<xelement> fragments = d.element(xmlns+"include").elements(xmlns+"fragment"); 

you need make xmlns variable xnamespace (instead of string):

xnamespace xmlns = "http://schemas.microsoft.com/wix/2006/wi";  ienumerable<xelement> fragments = doc.element(xmlns + "include").elements(xmlns + "fragment"); 

then should work fine!