ASP querystring and XML

[Don]

Hi:

If somebody just gives me and asp page that returns XML, how do I consume
that?
Such as news.asp?page=id. This returns a page of XML in IE. What objects
and properties in .NET should I research?

Thanks,

Do

[Martin Honnen]

Don wrote:

If somebody just gives me and asp page that returns XML, how do I consume
that?
Such as news.asp?page=id. This returns a page of XML in IE. What objects
and properties in .NET should I research?

If you want an XML DOM document object which models the whole XML
document as a tree of node objects then you need in C#

using System.Xml;

XmlDocument xmlDocument = new XmlDocument();
xmlDocument.Load("http://example.com/news.asp?page=id");

But .NET has lots of ways depending on what you want to do with the XML,
you can simply read through the XML pulling out node by node to extract
the data that is relevant for you using XmlTextReader, you can validate
against a schema or DTD using XmlValidatingReader, you can use a schema
for the XML to create a .NET class which you can then instantiate from
an XML instance document.

--

Martin Honnen
http://JavaScript.FAQTs.com/

[news.microsoft.com]

What I want to do is a couple of things.

1) I will use it with an XSL for transformation to display on a page.
2) I will cache it. What caching mechanisms from the .NET infrastructure
can I use to save the doc until I pull a newer one.

Thanks,

Don
"Martin Honnen" <ma*******@yahoo.de> wrote in message
news:uB**************@TK2MSFTNGP10.phx.gbl...

Don wrote:

If somebody just gives me and asp page that returns XML, how do I
consume
that?
Such as news.asp?page=id. This returns a page of XML in IE. What
objects
and properties in .NET should I research?

If you want an XML DOM document object which models the whole XML document
as a tree of node objects then you need in C#

using System.Xml;

XmlDocument xmlDocument = new XmlDocument();
xmlDocument.Load("http://example.com/news.asp?page=id");

But .NET has lots of ways depending on what you want to do with the XML,
you can simply read through the XML pulling out node by node to extract
the data that is relevant for you using XmlTextReader, you can validate
against a schema or DTD using XmlValidatingReader, you can use a schema
for the XML to create a .NET class which you can then instantiate from an
XML instance document.

--

Martin Honnen
http://JavaScript.FAQTs.com/

[Martin Honnen]

news.microsoft.com wrote:

1) I will use it with an XSL for transformation to display on a page.
Then usually an XPathDocument suffices as that provides optimized read
access for XSLT/XPath while not having the overhead XmlDocument has to
allow manipulating the document:
<http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfSystemXmlXPathXPathDocumentClassTopic.asp>
2) I will cache it. What caching mechanisms from the .NET infrastructure
can I use to save the doc until I pull a newer one.

That depends on the type of .NET application you are developing, whether
it is a Win application or an ASP.NET application for instance.
--

Martin Honnen
http://JavaScript.FAQTs.com/

[news.microsoft.com]

It is for an ASP.NET application. Basically, I have a service that I would
like to call, once the page for day is cached, I will use it for the day
until the next page is pulled the following day.

"Martin Honnen" <ma*******@yahoo.de> wrote in message
news:uJ**************@TK2MSFTNGP14.phx.gbl...

news.microsoft.com wrote:

1) I will use it with an XSL for transformation to display on a page.

Then usually an XPathDocument suffices as that provides optimized read
access for XSLT/XPath while not having the overhead XmlDocument has to
allow manipulating the document:
<http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfSystemXmlXPathXPathDocumentClassTopic.asp>

2) I will cache it. What caching mechanisms from the .NET infrastructure
can I use to save the doc until I pull a newer one.

That depends on the type of .NET application you are developing, whether
it is a Win application or an ASP.NET application for instance.
--

Martin Honnen
http://JavaScript.FAQTs.com/

[Martin Honnen]

news.microsoft.com wrote:

It is for an ASP.NET application. Basically, I have a service that I would
like to call, once the page for day is cached, I will use it for the day
until the next page is pulled the following day.

ASP.NET can store objects application wide, see
<http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfSystemWebUIPageMembersTopic.asp>
<http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemwebhttpapplicationstateclasstopic.asp>

--

Martin Honnen
http://JavaScript.FAQTs.com/