Manipulating SequenceFile Data with DOM (XmlDocument)

[j_dodek]

Hi,

I like to change some Step-data settings via xml.

I have saved my seq-file as xml. So i can access it via .Net(2.0) XmlDocument Class.

Accessing and Manipulation is working well, BUT

After saving all attributes have " " (double quotes)  Instead of Ni's  ' ' (single quotes)

so TS will not be able to open the file again !!

NI:

<teststandfileheader type='SequenceFile' fileversion='416' productname='TestStand' productversion='4.0 (4.0.0.326)' compatibleversion='4.0.0.0' buildversion='4.0.0.326' origfilepath='D:\test.seq' xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.ni.com/TestStand/4.0.0/SequenceFile">

<typelist>

....... 

DOM: 

<teststandfileheader type="SequenceFile" fileversion="416" productname="TestStand" productversion="4.0 (4.0.0.326)" compatibleversion="4.0.0.0" buildversion="4.0.0.326" origfilepath="D:\test_Modif.seq" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.ni.com/TestStand/4.0.0/SequenceFile"><

typelist>

......

Do you know how i can slove this behaviour ?

regards

Juergen

Message Edited by j_dodek on 11-19-2009 04:49 AM

[j_dodek · Accepted solution]

Yeah,

XmlTextWriter.QuoteChar did the trick!

Bad:

xmlDocSeq.Save("D:\\Test_Modif.xml");

Good:

XmlTextWriter xmlWriter = new XmlTextWriter("D:\\Test_Modif.xml", System.Text.Encoding.UTF8))

xmlWriter.QuoteChar = '\'';

xmlDocSeq.Save(xmlWriter);

Juergen

[dug9000]

Are you sure quotes were the problem? Although TestStand writes out the file using single quotes, it supports reading it in with either kind of quotes. It worked for me either way in a simple test case. If you have a case in which it is not working please let us know.

-Doug

[j_dodek]

Hi Doug,

The only thing i changed via DOM was renaming some child elements <value>ABC</value> to <value>YXZ</value> to  of some User Steptype nodes.

After saving all Attributes has changed from single to double qoutes.

I was not able toreopen the file with TS.

When i am back in office i will write a small app

that opens a TS-file with DOM and save it back without any modification.

And check out what happens.

Maybe the Encoding.UTF8 is the trick

Regards

Juergen

[j_dodek]

Hi Doug,

you are right it. It doesnt care if you are using single or double qoutes or even utf

my Test.seq(just 1 Step) is running in all ways. (Original has 400 steps inside)

But i realizsed (feeling, no speedmeasure) that single and utf are opened faster than the others.

I think i should have to way a few minutes more before posting this thread.

Regards

juergen

Message Edited by j_dodek on 11-20-2009 01:59 AM

[dug9000]

No problem. Glad I could help clarify things.

Some additional information in case you are curious:

TestStand is expecting UTF8 encoding, so I'd recommend you keep using that. Though you probably won't notice a problem unless you are using characters from a multibyte language such as Chinese or Japanese.

I would not expect any signficant speed difference between single or double quotes. If there is a difference it should be very small (probably immeasurably so).

Hope this helps,

-Doug

Message Edited by dug9000 on 11-20-2009 10:42 AM