Parsing the simplest xml document

Question

Good day, Hashcode.

Monday is a tough day, and it looks like I finally turned over.

There is the simplest xml document:

<Шапка> <error code="40" message="Can not login." /> </Шапка>

It is required to get "40" from there.

From my point of view, you need to get the value of the code attribute of the error element.

Type of such:

  return (from node in xdoc.Descendants() select node.Element("error").Attribute("code").Value).First();

Does not work. Why? How to write correctly? It’s a shame to go to StackOverflow with this question :)

And after all, this is the same thing as:

 <Шапка> <error> <code>40</code> <message>Can not login</message> </error> </Шапка>

Right?

in the first example, xml code is an attribute, and in the second example, the code is already a tag.
Therefore the code that you gave for the second option is not suitable.
the logical structure is the same, but otherwise they are quite different.
People, I'm glad that you consider the second option (which I came up with) better than the first (which the server sends me), but I cannot take and change the structure of the answer from the server.
It is likely that there are declared namespaces that you do not take into account.

Community spirit ♦ one · Accepted Answer · 2013-02-11T13:06:54

So the solution.

[drumroll]

XNamespace (!) Skipped

facepalm

The decision and discussion was here

Community spirit ♦

one

Olter

1,441 16 silver marks 49 bronze marks

Isn't that your question? hashcode.ru/questions/112356 - mantigatos
@mantigatos, I have occasional memory lapses. :) But seriously, there really was some kind of eclipse found ... Nearly two dozen methods were written in the same class with the same namespace, but I still sat and stupid. I can not explain this. - Olter

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VladD VladD 183k 16 gold signs 228 silver marks 434 bronze marks · Answer 2 · 2013-02-11T12:41:01

It works for me:

 xdoc.Descendants("error").First().Attribute("code").Value;

VladD

183k 16 gold signs 228 silver marks 434 bronze marks

Yeah. But I - no. And they also write to me on SO that it works. So the error is somewhere else ... God knows, I will understand. - Olter
@Olter: see what they give out: * xdoc.Descendants("error").ToList() ? * xdoc.Descendants("error").First() ? * xdoc.Descendants("error").First().Attribute("code") ? --- Canceled, the problem, as you write, is not that. - VladD

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Answer 3 · 2013-02-11T12:22:53

look towards XMLTextReader from the System.Xml space

PS Try to pull the values not LINQ, but in the traditional way.

3 answers 3