Get value from xml file

Question

Hi All,
I have a xml file like this:

<?xml version="1.0" encoding="utf-8" standalone="yes"?>

<information>

<information1 name="region">Asia</information1>

<information1 name="mainlang">ENG</information1>

</information>

<Data>

<dataname lang="Hindi" group="Asia">

test1.xml

</dataname>

<dataname lang="Chinese" group="Asia">

test2.xml

</dataname>

<dataname lang="English" group="US">

test3.xml

</dataname>

<dataname lang="Polish" group="EU">

test4.xml

</dataname>

</Data>

I am trying to get information/information1['mainlang']  == ENG from xml file.

and also 

I would like to get All "lang, group, dataname" from xml file.

I am getting following error "invalid data at the root level. line 1, position the first" for the following code:

             XDocument doc = XDocument.Load(path);

            XElement test = doc.Root;

            var nodeList = doc.SelectNodes("//dataname");


Advance thanks,
Darma