Error 1 : .net XML Reader From LabVIEW to TestStand

[FlorianIMBERT]

Hi all, 

I have to parse a large xml file and had performance issue with xml functions proposed by LabVIEW. 

instead, i used the microsoft System.Xml.XmlReader .net dll 

found in System.XML(4.0.0.0) / System.xml / XmlReader. 

it works fine and far faster. 

I've built a .net dll in LabVIEW that used this assembly. 

when I'm using this dll in other LabVIEW project, it works fine, but if i call the dll in TestStand, i got Error 1. 

I even tried to call the dll from python, and it works fine. 

PS : If i call directly the System.Xml.XmlReader .net dll in TestStand, i don't get any Error. 

I'm using LabVIEW and TestStand 2017. 

any clue to resolve this issue ?

I've attached an example that allow to reproduce the issue.

Thanks All. 

[billko]

Ugh.  ANYthing is faster than the native LV XML parser.  I believe VIPM has at least one based on EasyXML - but, ironically, it's harder to use.  Faster, though.  I've seen some versions of this that are hundreds of times faster than the native XML functions.

[FlorianIMBERT]

Hi, I tried the JKI easy XML from VI Package Manager,

I used it for a while. it is indeed faster than default LabVIEW functions, but in comparison with xmlReader  microsoft .net ... there is still some progress to made 😉

[FlorianIMBERT]

Hi. 

No one else have an idea ? :'(

Thanks. 

[Kyle97330 · Accepted solution]

 I've gotten LabXML working and it seems to go pretty fast.  It hasn't been updated in 14 years but still worked OK when I tried it out in LabVIEW 2018.

[billko]

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@Kyle97330 wrote:

 I've gotten LabXML working and it seems to go pretty fast.  It hasn't been updated in 14 years but still worked OK when I tried it out in LabVIEW 2018.

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I believe this one is literally hundreds of times faster than the native parser.

[FlorianIMBERT]

Hi, 

thanks for your answer, i did not know that project. 

i just tried it and it took 60+ seconds to read my file, while my project with xmlReader took 5s (35000*4 Elements to read) 

i'll do some more tests to see if i missed something but it did not looks that fast to me ^^ 

[FlorianIMBERT · Accepted solution]

Hi, 

I did not managed to parse my xml file faster than with xmlReader.

but as i just need to extract the xml data and use them as a csv file, i'm using an xslt file and use the function provided by the libxml project to convert xml file from an xslt. 

http://xmlsoft.org/XSLT/tutorial/libxslttutorial.html

it works (fast ~3s) so it will be ok. 

_____________

by the way, the system .net assambly also have some function to use an xslt file ... but i got the same error msg than with the xmlReader when using in TestStand. i don't understand why :'( 

Thanks Kyle97330 for your link 🙂 

[FlorianIMBERT · Accepted solution]

Hi, 

I did not managed to parse my xml file faster than with xmlReader.

but as i just need to extract the xml data and use them as a csv file, i'm using an xslt file and use the function provided by the libxml project to convert xml file from an xslt. 

http://xmlsoft.org/XSLT/tutorial/libxslttutorial.htm

it works (fast ~3s) so it will be ok. 

_____________

by the way, the system .net assambly also have some functions to use an xslt file ... but i got the same error msg than with the xmlReader when using in TestStand. i don't understand why :'( 

Thanks Kyle97330 for your link 🙂