large XML

[Finn J Johnsen]

Hi

I've got a rather large XML -file (40mb). My app is to interact with the
data in this XML. I need tips on best way to do (fast) seeks and lookups
in this file?

MS recommends not using the XMLDocument class on XML's larger than 1 MB.

I've tried stripping the XML into my own object structure, and putting
it into a hashtable. The serialized hashtable is 10 mb in size, and
lookups are fast (on a PC app, I assume it would go fast on a CF-device
as well). My idea was to put the serialized hashtable on the CF device
(which offers other problems I wont go into right now), deserialize it,
and do my stuff. However, it turned out that deserializing it took a
long time even on a 2,5ghz PC (3-5 minutes or so), and that is a problem.

Several minutes startuptime on the device app is not something I can accept.

Any suggestions to solve my problem would be appreciated.

Regards,
Finn

 

[Peter Foot [MVP]]

Don't expect the device to perform as well as your desktop PC at processing
the data, and be aware that Serialization is not included in the Compact
Framework. You should consider putting the data into a structured database
e.g. SqlCe and querying that as required.

Peter

--
Peter Foot
Windows Embedded MVP
www.inthehand.com | www.opennetcf.org

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