XML / XSL

Need help creating objects from xml file!!

1-Jul-05 13:22

OK, I'll try. Use Sytem.Xml.XmlTextReader for this.

This is only example, since I don't know what nodes you want to read or how your XML file looks like.

int i = 0; // counter
while( reader.Read() && i<2)
{
  if( reader.NodeType == XmlNodeType.Element)
  {
    i++;
    node1 = reader.InnerXml; // get value of node (=>  change this line in order to work with real NodeType)
  }
}

Does it help?

David

Web Service chat?

wakkerjack1-Jul-05 3:45

wakkerjack

1-Jul-05 3:45

I want to make a chatting application using web services. Ne1 have an idea on how to do this?

Ur contribution is extremely valuable Smile | :)

richiemac30-Jun-05 0:44

30-Jun-05 0:44

Hi all,

I have a .xml file that looks similar to this,

<real_time_data_screen>

<screen_title>
<english>Screen Title</english>
<alternate_language>xzScreen xzTitle</alternate_language>
</screen_title>
<screen_classification>4294967295</screen_classification>
<screen_group>256</screen_group>

<guage_configuration>
<name>
<english>Guage Name</english>
<alternate_language>xzGuage xzName</alternate_language>
</name>
<guage_id>2</guage_id>
<units>
<english>Units</english>
<alternate_language>xzUnits</alternate_language>
</units>
<minimum>1</minimum>
<maximum>10</maximum>
<sections>
<number>10</number>
<limits>10</limits>
<color>234</color>
</sections>
</guage_configuration>

<analogue_variable>
<name>
<english>Variable Name</english>
<alternate_language>xzVariable xzName</alternate_language>
</name>
<input_values>
<minimum>1</minimum>
<maximum>10</maximum>
</input_values>
<output_values>
<minimum>1</minimum>
<maximum>10</maximum>
</output_values>
<needle_color>234</needle_color>
<guage_id>2</guage_id>
</analogue_variable>

<digital_led>
<name>
<english>LED Name</english>
<alternate_language>xzLED xzName</alternate_language>
</name>
<variable_id>2</variable_id>
<clear_color>255</clear_color>
<set_color>0</set_color>
</digital_led>

</real_time_data_screen>

I need to read through this file and create objects and update attributes depending on the data in this file. The objects will be screen, gauge, analogue and digitalLed. I've got very basic knowledge of xml and can just about read through the file and get elements and the corresponding value. How would I best go about reading throuh the file and when I find a screen tag (for instance) create a screen object and anything within that tag be written to the object.

Hope this makes sense and thanks in advance.

richiemac1-Jul-05 0:13

1-Jul-05 0:13

Not any ideas??? Frown | :(

Gavin Jeffrey1-Jul-05 2:20

Gavin Jeffrey

1-Jul-05 2:20

you may want to have a look at serialization check out http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnexxml/html/xml01202003.asp[^]
or maybe do a search on google for serialization. I think (not sure here) but you need to have an object already defined before you can deserialize xml to it.
Another way (and im not sure if it is a good way) would be to go through the xml similar to this way:
System.Xml.XmlDocument doc = new System.Xml.XmlDocument();
doc.load(xmlSource);
XmlNode screenNode = doc.documentElement.selectSingleNode("//real_time_data_screen")
now you have your screen portion of the xml and you can use that node to select whatever you want from the screen section e.g.
screenNode.selectSingleNode("//screen_title")

Something like that I anyways.

richiemac1-Jul-05 7:03

1-Jul-05 7:03

Thanks for the help. I'll look at it over the weekend and hopefully sort it out. I've sort of got it doing what I want but it's not retty and I know there's a better way.

Thank again for the pointers.

richiemac8-Jul-05 1:01

IE Requirements for DOM and XSLT?

8-Jul-05 1:01

This is what I came up with,

I used the XmlTextReader class to read start elements and then read the element strings. Info on the XmlTextReader class can be found here

Here's a small sample

vReader->ReadStartElement ( "screen_title" );<br />
			m_screen->EnglishTitle = vReader->ReadElementString ( "english" );<br />
			m_screen->AlternateTitle = vReader->ReadElementString ( "alternate_language" );<br />
		vReader->ReadEndElement (); // screen_title<br />
		m_screen->Classification = vReader->ReadElementString ( "screen_classification" );<br />
		m_screen->Group = vReader->ReadElementString ( "screen_group" );

Not great but for small simple Xml files this seems to do the job required.

Anonymous29-Jun-05 8:08

Anonymous

29-Jun-05 8:08

Hello,

What are the minimum IE requirements for DOM and XSLT?

Re: IE Requirements for DOM and XSLT?

DavidNohejl29-Jun-05 8:29

Re: IE Requirements for DOM and XSLT?

29-Jun-05 8:29

What do you mean by minimal requirements? Version of IE? here[^] are features of newest IE... look for DOM and MSXML features. However I don't know since when these features are present in IE, nor do I know if it was really your question. Blush | :O

David

Christian Graus29-Jun-05 11:59

Christian Graus

29-Jun-05 11:59

Version 5, I believe. But you can download the MSXML dll seperately, I dunno how well it fits in with IE if you do.

Christian Graus - Microsoft MVP - C++

infopath: need help

Steven M Hunt28-Jun-05 6:37

Steven M Hunt

28-Jun-05 6:37

I have just been put in charge of designing an infopath form to integrate into sharepoint services. Since I'm new to infopath, I need some help with a few things. First, I need to be able to load a picture from a link on the sharepoint list without using base64. Second, I have to have a text box which will update the database entries shown as the user types. Right now I have been using conditional formatting, but I'm unsure how to get the text box to trigger it after every character entered in the control.

Thanks in advance
-- Steve

Need resources for C++ & XML

Wheatbread28-Jun-05 5:03

Wheatbread

28-Jun-05 5:03

Hi! I was just given a project to read XML from a server and display the contents in our software. I figure there's an XML parser out there I wouldnt have to reinvent it, but I'm not sure what/where/how etc. I learned XML/XSL/XSLT 2 yrs ago, barely used it, and never with C++.

CAn someone give me info/advice on where to start? I'm not a DOM/COM expert just a C++/VC++ developer who's done more communication development than web stuff.

Any help would be useful. I have books on XML/XSL/XSLT, but none relating it to C++.

THanks in advance.
-C

Re: Need resources for C++ & XML

DavidNohejl28-Jun-05 7:12

Looking for Developers to try new C++ XML interface.

28-Jun-05 7:12

Wheatbread wrote:
I figure there's an XML parser out there I wouldnt have to reinvent it, but I'm not sure what/where/how etc.

Have you tried this[^]?

David

Stuart Konen25-Jun-05 12:35

Stuart Konen

25-Jun-05 12:35

I'm looking for any C++ developers interested in testing a new XML library focusing on a simplistic public interface. Developers of almost any skill are welcome to submit a request. Either e-mail me directly or leave a message along with your e-mail address in this topic. A lot of people have expressed a great interest in the project, and I along with them, believe it'll create a massive impact in the world of Open Source.

Just send the e-mails to skonen@gmail.com . Anybody who is interested in giving it a try needs to be proficient in English and have no fear with letting their opinions be heard.

XML text reader

letusC#24-Jun-05 11:25

letusC#

24-Jun-05 11:25

Hi,
I am including System.XML but

XMLTextReader reader ;

this statement is creating build time errors.
"The type or namespace name 'XMLTextReader' could not be found (are you missing a using directive or an assembly reference?)"
Any idea about this ?

Re: XML text reader

DavidNohejl25-Jun-05 1:24