Reading XML file faster in ASP.NET

Question

I have multiple XML files that I need to parse. Problem is that I only need some data in the last couple of lines.

I currently use XMLTextReader and reader.ReadToFollowing("DATANEEDED"); but it is still too slow. Does anyone know if I can 'tail' an XML file and read from there? (taking into account the tail would not be a valid XML file) or any other ways to retrieve the last few nodes in the XML without parsing through the entire XML file?

I am using .NET 2.0 so no in-built linq :(

Thanks

Perhaps see the `(Stream, XmlNodeType, XmlParserContext)` overloaded constructor... you may still have to initially position the stream on a valid element -- I do not know -- but that should move you as fast as you can move the stream :-) — , Jun 22 '10 at 08:37

score -1 · Answer 1 · answered Jun 22 '10 at 08:23

-1

XmlDocument is a better choice. Within it use xPath queries. I guess XmlDocument take cares about performance automatically.

answered Jun 22 '10 at 08:23

Afshar Mohebi

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You guess wrong. using XMLDocument will be orders of magnitude slower than XMLTextReader, especially for large files. – Binary Worrier Jun 22 '10 at 08:27
That's what I read too. XMLTextReader seems to be the fastest. – xt_20 Jun 23 '10 at 02:18
XmlDocument is a lot slower, see for example http://www.nearinfinity.com/blogs/joe_ferner/performance_linq_to_sql_vs.html – Mauricio Scheffer Aug 15 '10 at 06:42

Reading XML file faster in ASP.NET

1 Answers1