2.0 : fastest read-only forward-only loading method

[John A Grandy]

In 2.0 what is the fastest way to iterate through an element set in a
read-only forward-only XMLDocument ?

For example , load the key/value pairs in the following xml doc into a
hashtable :

<Mappings>
<Mapping MappingKey="AL" MappingValue="Alabama" />
<Mapping MappingKey="CA" MappingValue="Alabama" />
</Mappings>

[Martin Honnen]

John A Grandy wrote:

In 2.0 what is the fastest way to iterate through an element set in a
read-only forward-only XMLDocument ?

Create an XmlReader and read out the nodes you are looking for. That
assumes you have an XML document in a file or stream. If you already
have a DOM XmlDocument instance then using XPath is an option.

--

Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/

[John A Grandy]

Unless your xml schema is simplistic, I think an XPathReader is typically
necessary ... no ?

"Martin Honnen" <ma*******@yahoo.de> wrote in message
news:eW**************@TK2MSFTNGP09.phx.gbl...

John A Grandy wrote:

In 2.0 what is the fastest way to iterate through an element set in a
read-only forward-only XMLDocument ?

Create an XmlReader and read out the nodes you are looking for. That
assumes you have an XML document in a file or stream. If you already have
a DOM XmlDocument instance then using XPath is an option.

--

Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/

[Martin Honnen]

John A Grandy wrote:

Unless your xml schema is simplistic, I think an XPathReader is typically
necessary ... no ?

You asked the following:

In 2.0 what is the fastest way to iterate through an element set in a
read-only forward-only XMLDocument ?

For read-only forward-only fastest reading an XmlReader is the tool.

--

Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/

[John A Grandy]

Right, but what if the element set you wish to iterate through is buried in
a complex XML hierarchy ...

"Martin Honnen" <ma*******@yahoo.de> wrote in message
news:Of**************@TK2MSFTNGP04.phx.gbl...

John A Grandy wrote:

Unless your xml schema is simplistic, I think an XPathReader is typically
necessary ... no ?

You asked the following:

In 2.0 what is the fastest way to iterate through an element set in a
read-only forward-only XMLDocument ?

For read-only forward-only fastest reading an XmlReader is the tool.

--

Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/

[Martin Honnen]

John A Grandy wrote:

Right, but what if the element set you wish to iterate through is buried in
a complex XML hierarchy ...

Well Xml(Text)Reader pulls in node by node so it is capable with dealing
with a complex XML hierarchy, you simply need to make sure your code
using the reader finds what it is looking for.
I don't think we will get far by discussing further without knowing the
XML markup you have in mind so feel free to post a URL for instance. Of
course you can use XPath if you want to, it is not that my suggestion
was meant to rule XPath out.
--

Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/