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printing list of xml nodes in c#

I am need bit of help on getting list of xml nodes and printing them.
My code is as below:
XmlDocument doc = new XmlDocument();
doc.Load("To44532.xml");
XmlNode xn = doc.DocumentElement;
foreach (XmlNode xn2 in xn)
{ Console.WriteLine(xn2); }
Console.ReadLine();
I am new to c# please accept my apologies in advance for asking this basic question. So I wanted full list of nodes and then printing them in output.
I ended up with this piece of code because I wanted to debug one of the other code. The idea was that I wanted to display specific nodes in winforms. I tried if statement e.g. :
foreach (XmlNode node in doc.DocumentElement)
{
if (node.Equals("DbtItm"))
{ ..... }
Could you please advise whats the best way to achieve it?

You can select XML Nodes by Name.
<?xml version="1.0" encoding="UTF-8"?>
<bookstore>
<book category="cooking">
<title lang="en">Everyday Italian</title>
<author>Giada De Laurentiis</author>
<year>2005</year>
<price>30.00</price>
</book>
<book category="children">
<title lang="en">Harry Potter</title>
<author>J K. Rowling</author>
<year>2005</year>
<price>29.99</price>
</book>
<book category="web">
<title lang="en">Learning XML</title>
<author>Erik T. Ray</author>
<year>2003</year>
<price>39.95</price>
</book>
</bookstore>
For example to get only book author and book year from as above xml.
XmlDocument xml = new XmlDocument();
xml.Load("XMLFile1.xml");
XmlNodeList xnList = xml.SelectNodes("/bookstore/book");
foreach (XmlNode xn in xnList)
{
string author = xn["author"].InnerText;
string year = xn["year"].InnerText;
Console.WriteLine(author+"-"+year);
}

Removing parent node from xml collections

I am trying to get rid of the parent node of a collection in xml (using linq-to-xml):
For example, the input xml:
<envelop>
<books>
<book>
<title>ABC</title>
<publishedDate>2012-12-12</publishedDate>
<authors>
<author>John Smith</author>
<author>Bob Doe</author>
</authors>
<book>
<book>
<title>XYZ</title>
<publishedDate>2013-03-06</publishedDate>
<authors>
<author>Henry Blah</author>
<author>Bob Doe</author>
</authors>
<book>
</books>
</envelop>
I would like the result to be:
<envelop>
<book>
<title>ABC</title>
<publishedDate>2012-12-12</publishedDate>
<author>John Smith</author>
<author>Bob Doe</author>
<book>
<book>
<title>XYZ</title>
<publishedDate>2013-03-06</publishedDate>
<author>Henry Blah</author>
<author>Bob Doe</author>
<book>
</envelop>
The nodes: <books> and <authors> are gone - only their children remain.
I saw the following question but with XSLT (Remove parent nodes from xml with xslt). Would like to stay away from XSLT at the moment.

var document = XDocument.Load(validXmlFilePath);
while (document.Descendants("authors").Any())
{
var x = document.Descendants("authors").First();
x.AddAfterSelf(x.Nodes());
x.Remove();
}
var result = document.Descendants("book");

Do you fill your object in code and than serialize it? If so, you can use [XmlElement("Book")] attribute above your list property in your class:
[XmlElement("Book")]
public List<Book> Books {get; set;}

In VB the code would be
Dim result As XElement = <envelop></envelop>
result.Add(xe...<book>)
For Each el As XElement In result...<author>.ToList
el.Parent.Parent.Add(New XElement(el))
Next
result...<authors>.Remove()
with xe defined as
Dim xe As XElement
'to load from a file
' xe = XElement.Load("Your Path Here")
' for testing
xe = <envelop>
<books>
<book>
<title>ABC</title>
<publishedDate>2012-12-12</publishedDate>
<authors>
<author>John Smith</author>
<author>Bob Doe</author>
</authors>
</book>
<book>
<title>XYZ</title>
<publishedDate>2013-03-06</publishedDate>
<authors>
<author>Henry Blah</author>
<author>Bob Doe</author>
</authors>
</book>
</books>
</envelop>
result looks like
<envelop>
<book>
<title>ABC</title>
<publishedDate>2012-12-12</publishedDate>
<author>John Smith</author>
<author>Bob Doe</author>
</book>
<book>
<title>XYZ</title>
<publishedDate>2013-03-06</publishedDate>
<author>Henry Blah</author>
<author>Bob Doe</author>
</book>
</envelop>

Get XML content from XmlNodeList

I have a question that may seem very simple, but it's giving me a headache. I have this XML file that has multiple entries, like:
<books>
<book>
<id>1</id>
<firstCover>
<author name="**" age="**" />
<title name="zz" font="yyy" size="uuu"/>
</firstCover>
<lastCover>
</lastCover>
</book>
<book>
<id>2</id>
<firstCover>
<author name="**" age="**" />
<title name="zz" font="yyy" size="uuu"/>
</firstCover>
<lastCover>
</lastCover>
</book>
</books>
Now, in order to get the XML content for first cover of book with id=1, I do this:
XmlNodeList b = root.SelectNodes("/books/book[contains(id,1)]/firstCover");
Then I would really need to take the whole content of what's inside the firstCover for that book :
<author name="**" age="**" />
<title name="zz" font="yyy" size="uuu"/>
and insert it into an XmlElement. This is where I'm stucked. I know I can do it with a foreach loop in XmlNodeList, but is there a more simple way?

I'm guessing you want to actually insert it into an XMLElement in another XMLDocument.
Is this what you are looking for?
XmlDocument sourceDoc = new XmlDocument();
//This is loading the XML you present in your Question.
sourceDoc.LoadXml(xmlcopier.Properties.Resources.data);
XmlElement root = sourceDoc.DocumentElement;
XmlElement b = (XmlElement)root.SelectSingleNode("/books/book[contains(id,1)]/firstCover");
XmlDocument destDoc = new XmlDocument();
XmlElement destRoot = destDoc.CreateElement("base");
destDoc.AppendChild(destRoot);
XmlElement result = destDoc.CreateElement("firstCover");
result.InnerXml = b.InnerXml;
destRoot.AppendChild(result);
destDoc.Save("c:\\test.xml");

Getting the previous node of a searched keyword in xml

I have an xml document like the following:
<bookstore>
<book>
<title>The Autobiography of Benjamin Franklin</title>
<author>
<first-name>Benjamin</first-name>
<last-name>Franklin</last-name>
</author>
<price>8.99</price>
</book>
<book>
<title>Zen and the Art of Motorcycle Maintenance</title>
<author>
<first-name>Robert</first-name>
<last-name>Pirsig</last-name>
</author>
<price>5.99</price>
</book>
<book>
<title>Other Cities</title>
<author>
<first-name>Benjamin</first-name>
<last-name>Rosenbaum</last-name>
</author>
<price>9.99</price>
</book>
</bookstore>
Of course, the bookstore has more than one book, so I I want to search for an author and then get returned an XElement for the book node that contains the searched author name.

var document = XDocument.Parse(xml);
var bookElements = document.Descendants("book")
.Where(arg => arg.Element("author").Element("first-name").Value == "Benjamin")
.ToList();
or
var bookElements = document.Descendants("first-name")
.Where(arg => arg.Value == "Benjamin")
.Select(arg => arg.Parent.Parent)
.ToList();
[Edit] As you keep editing the question, I will edit the answer :).
To find the first book that meets the criteria:
var foundBookElement = document.Descendants("book")
.Where(arg => arg.Element("author").Element("first-name").Value == "Benjamin")
.FirstOrDefault();
foundBookElement will be null if none of the books match the criteria.

C# How to extract complete xml node set

<?xml version="1.0" encoding="ISO-8859-1"?>
<bookstore>
<book category="COOKING">
<title lang="en">Everyday Italian</title>
<author>Giada De Laurentiis</author>
<year>2005</year>
<price>30.00</price>
</book>
<book category="CHILDREN">
<title lang="en">Harry Potter</title>
<author>J K. Rowling</author>
<year>2005</year>
<price>29.99</price>
</book>
<book category="WEB">
<title lang="en">XQuery Kick Start</title>
<author>James McGovern</author>
<author>Per Bothner</author>
<author>Kurt Cagle</author>
<author>James Linn</author>
<author>Vaidyanathan Nagarajan</author>
<year>2003</year>
<price>49.99</price>
</book>
<book category="WEB">
<title lang="en">Learning XML</title>
<author>Erik T. Ray</author>
<year>2003</year>
<price>39.95</price>
</book>
</bookstore>
Is their any way using XPath to select the complete first node set, for example from
<book category="COOKING">
to
</book>,
so that, that chunk of xml can be stored for later use.
Bob.

Let's say this XML is stored in an XmlDocument called doc.
XmlElement docRoot = doc.DocumentElement;
XmlNode cookingNode = docRoot.SelectSingleNode("./book[#category='COOKING']");
I tested this and added this line to verify:
Console.WriteLine(cookingNode.OuterXml);
Here was the output:
<book category="COOKING"><title lang="en">Everyday Italian</title><author>Giada
De Laurentiis</author><year>2005</year><price>30.00</price></book>

This query will select that node. Are you trying to get a set of nodes or just the single one? You might have to put the bookstore node back yourself if you only want th subset of nodes.
/bookstore/book[#category='COOKING']
as XmlDocument ...
var x = new XmlDocument();
x.Load("XmlFile1.xml");
var ns = x.SelectSingleNode("/bookstore/book[#category='COOKING']");
var res = ns.OuterXml;
as XDocument ...
var x = XDocument.Load("XmlFile1.xml");
var root = new XElement("bookstore",
from book in x.Element("bookstore").Elements("book")
where book.Attribute("category").Value == "COOKING"
select book
);
if you just want the book node you can do this instead of the root version above
var book = x.Element("bookstore")
.Elements("book")
.Where(n => n.Attribute("category").Value == "COOKING")
.First();

suppose I want to extract only the data wherethe xml file is as follows ..
<book category="COOKING">
<title lang="en">Everyday Italian</title>
<author auth="up">Giada De Laurentiis</author>
<year>2005</year>
<price>30.00</price>
</book>
the final result on the list view should look like this
lang auth
en up
I have coded as follows ..
XmlNodeList elemList = doc.GetElementsByTagName("book");
for (int j = 0; j < elemList.Count; j++)
{
if (elemList[j].Attributes["category"].Value == "COOKING")
{
XmlNodeList elemList1 = doc.GetElementsByTagName("author");
for (int i = 0; i < elemList1.Count; i++)
{
string attrVal = elemList1[i].Attributes["lang"].Value;
string attrVal1 = elemList1[i].Attributes["auth"].Value;
ListViewItem lvi = new ListViewItem();
lvi.SubItems.Add(attrVal1);
lvi.SubItems.Add(attrVal1);
}
listView1.Items.Add(lvi);
}
}
}

Adding to Matthew's response:
XmlDocument xDoc = new XmlDocument();
// (Put code to populate xDoc here)
XmlNodeList xNode = xDoc.SelectNodes(#"/bookstore/book[#category='COOKING']");
xNode now equals Book of type COOKING.