How to get complete child nodes of an xml

Hi,
I am trying to parse an xml something like this given below.

<root>

<child1>
<sub1-child1>text</sub1-child1>
<sub1-child2>text</sub1-child2>
<sub1-child3>text</sub1-child3>
</child1>

<child2>
<sub2-child1>text</sub2-child1>
<sub2-child2>text</sub2-child2>
<sub2-child3>text</sub2-child3>
</child2>

<child3>
<sub3-child1>text</sub3-child1>
<sub3-child2>text</sub3-child2>
<sub3-child3>text</sub3-child3>
</child3>

</root>


If I am asking for the parser to get <child1> then I expect the output should be like this given below:

<child1>
<sub1-child1>text</sub1-child1>
<sub1-child2>text</sub1-child2>
<sub1-child3>text</sub1-child3>
</child1>

I dont want to get a nodelist for looping for all the sub child elements. But i saw DOM parser which is used only for getting one by one child element. I am not getting all the sub child elements along with the child element if i query for a child element.

I hope you got my point and let me know your thoughts on this. Thanks for your help in Advance.

What code do you have at the moment?

What, exactly, is it you want the code to do?
Because a NodeList is exactly what I'd expect from a search for a tag, which contains the relevant Elements and which I could then drill down into. That's XML.