XPath performance

[Jon]

I got a question on executing the xpath. Can someone let me know which way is
faster for the following two scenarios (one with XmlDocument and the other
using XmlDocument.CreateNavigator())?

XmlDocument doc = new XmlDocument();
doc.Load(input);

1. XmlNodeList nodes = doc.SelectNodes(xpathexp);
2. XmlNodeList nodes = doc.CreateNavigator().Select(xpathexp);

[Priya Lakshminarayanan]

The doc.SelectNodes is a convenience method that in turn calls
this.CreateNavigator().Select(xpath)
Note that XPathNavigator.Select returns an XPathNodeIterator and not an
XmlNodeList and hence the doc.SelectNodes internally creates an
XmlNodeList() that is returned.

Thanks,
Priya

"Jon" <Jo*@discussions.microsoft.com> wrote in message
news:1A**********************************@microsof t.com...

I got a question on executing the xpath. Can someone let me know which way
is
faster for the following two scenarios (one with XmlDocument and the other
using XmlDocument.CreateNavigator())?

XmlDocument doc = new XmlDocument();
doc.Load(input);

1. XmlNodeList nodes = doc.SelectNodes(xpathexp);
2. XmlNodeList nodes = doc.CreateNavigator().Select(xpathexp);

[Jon]

So doc.CreateNavigator().Select(xpathexp) should be faster since it does not
need to build the NodeList. Is it true?

"Priya Lakshminarayanan" wrote:

The doc.SelectNodes is a convenience method that in turn calls
this.CreateNavigator().Select(xpath)
Note that XPathNavigator.Select returns an XPathNodeIterator and not an
XmlNodeList and hence the doc.SelectNodes internally creates an
XmlNodeList() that is returned.

Thanks,
Priya

"Jon" <Jo*@discussions.microsoft.com> wrote in message
news:1A**********************************@microsof t.com...

I got a question on executing the xpath. Can someone let me know which way
is
faster for the following two scenarios (one with XmlDocument and the other
using XmlDocument.CreateNavigator())?

XmlDocument doc = new XmlDocument();
doc.Load(input);

1. XmlNodeList nodes = doc.SelectNodes(xpathexp);
2. XmlNodeList nodes = doc.CreateNavigator().Select(xpathexp);