Getting to an attribute.

[Robert Strickland]

I have a service that I call that returns back a XmlNode type. I need to get
to an attribute value and would like to use the GetAttribute method (because
it takes a string). However, XmlNode (or XmlElement) does not have that
method. They have the attributes collection with the item method that takes
an number value performing an ordinal lookup. I can declare an Xml document,
load the returning Xml stream, and then use the method but I do not want
reload the document again. Is there a way to take the current document typed
as an XmlNode and get to the document element that has this method without
reloading the stream?

Thanks

[Truong Hong Thi]

>However, XmlNode (or XmlElement) does not have that method.
If you are sure that the node is an element, you can cast it to
XmlElement and call XmlElement.GetAttribute or
XmlElement.GetAttributeNode method.

They have the attributes collection with the item method that takes
an number value performing an ordinal lookup Isn't it true that XmlNode.Attributes has overloaded versions to take
either index and name as its argument?
Is there a way to take the current document typed
as an XmlNode and get to the document element that has this method without
reloading the stream?

You can use XmlNode.OwnerDocument.DocumentElement.

------
Thi - http://thith.blogspot.com

[Martin Honnen]

Robert Strickland wrote:

I have a service that I call that returns back a XmlNode type. I need to get
to an attribute value and would like to use the GetAttribute method (because
it takes a string). However, XmlNode (or XmlElement) does not have that
method.

XmlNode is indeed a base class that does not implement GetAttribute as
not all nodes have attributes. But XmlElement of course implements
GetAttribute:
<http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfSystemXmlXmlElementClassGetAttributeTopic.asp >

So in C# if you have
XmlNode someNode;
you can cast if possible e.g.
XmlElement elementNode = someNode as XmlElement;
if (elementNode != null) {
// now access element.GetAttribute here
}

--

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

[Robert Strickland]

Casting worked. Thanks

"Truong Hong Thi" <th*****@gmail.com> wrote in message
news:11*********************@z14g2000cwz.googlegro ups.com...

However, XmlNode (or XmlElement) does not have that method.

If you are sure that the node is an element, you can cast it to
XmlElement and call XmlElement.GetAttribute or
XmlElement.GetAttributeNode method.

They have the attributes collection with the item method that takes
an number value performing an ordinal lookup

Isn't it true that XmlNode.Attributes has overloaded versions to take
either index and name as its argument?

Is there a way to take the current document typed
as an XmlNode and get to the document element that has this method without
reloading the stream?

You can use XmlNode.OwnerDocument.DocumentElement.

------
Thi - http://thith.blogspot.com

[Robert Strickland]

Casting worked. Thanks

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

Robert Strickland wrote:

I have a service that I call that returns back a XmlNode type. I need to
get to an attribute value and would like to use the GetAttribute method
(because it takes a string). However, XmlNode (or XmlElement) does not
have that method.

XmlNode is indeed a base class that does not implement GetAttribute as not
all nodes have attributes. But XmlElement of course implements
GetAttribute:
<http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfSystemXmlXmlElementClassGetAttributeTopic.asp >

So in C# if you have
XmlNode someNode;
you can cast if possible e.g.
XmlElement elementNode = someNode as XmlElement;
if (elementNode != null) {
// now access element.GetAttribute here
}

--

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