Convert XmlDocument to XpathDocument

[Fahad Ashfaque]

Hi,

I've an object of XmlDocument, I need to pass it to some function which
takes XpathDocument object, How could I convert? There is not Conversion
Operator overload like that.

Your reply might help me a lot.

Thanks,
Fahad

[Martin Honnen]

Fahad Ashfaque wrote:

I've an object of XmlDocument, I need to pass it to some function which
takes XpathDocument object, How could I convert? There is not Conversion
Operator overload like that.

You can save to a MemoryStream and then load from that stream e.g.
MemoryStream memStream = new MemoryStream();
xmlDocument.Save(memStream);
memStream.Position = 0;
XPathDocument xPathDocument = new XPathDocument(memStream);

--

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

[Fahad Ashfaque]

but that would be parsed again would not that be ?

My document is 3 MB of size and it takes 4 Seconds for XmlDocument.Load()
to return.

Dont I have other choice ?

"Martin Honnen" wrote:

Fahad Ashfaque wrote:

I've an object of XmlDocument, I need to pass it to some function which
takes XpathDocument object, How could I convert? There is not Conversion
Operator overload like that.

You can save to a MemoryStream and then load from that stream e.g.
MemoryStream memStream = new MemoryStream();
xmlDocument.Save(memStream);
memStream.Position = 0;
XPathDocument xPathDocument = new XPathDocument(memStream);

--

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

[Martin Honnen]

Fahad Ashfaque wrote:

but that would be parsed again would not that be ?

My document is 3 MB of size and it takes 4 Seconds for XmlDocument.Load()
to return.

Dont I have other choice ?

Why do you start with an XmlDocument at all?
Which is the method you want to pass the document to, perhaps it has
some overload with a signature for an interface XmlDocument implements.
It is difficult to make suggestions without knowing more context.

--

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

[Fahad Ashfaque]

I need to pass it to XslTransform and get the output through StreamWriter.
"Martin Honnen" wrote:

Fahad Ashfaque wrote:

but that would be parsed again would not that be ?

My document is 3 MB of size and it takes 4 Seconds for XmlDocument.Load()
to return.

Dont I have other choice ?

Why do you start with an XmlDocument at all?
Which is the method you want to pass the document to, perhaps it has
some overload with a signature for an interface XmlDocument implements.
It is difficult to make suggestions without knowing more context.

--

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

[Martin Honnen]

Fahad Ashfaque wrote:

I need to pass it to XslTransform and get the output through StreamWriter.

XslTransform has a method Load that takes an IXPathNavigable which is
implemented by both XPathDocument as well as XmlDocument.
And the method Transform also takes an IXPathNavigable so there you can
pass in an XmlDocument as well.
So when using XslTransform there is no need to convert an XmlDocument to
an XPathDocument.
--

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