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Now I´m lost, I´ve found an example from MS
Imports System
Imports System.IO
Imports System.Xml
public class Sample
public shared sub Main()
Dim doc as XmlDocument = new XmlDocument()
doc.LoadXml("<book xmlns:bk="urn:samples">" & _
"<bk:isbn>1-861001-57-5" & _
"<title>Pride And Prejudice" & _
"")
'Display information on the ISBN element.
Dim elem as XmlElement
elem = CType(doc.DocumentElement.ChildNodes.Item(0),XmlElement) Console.Write("{0} = {1}", elem.Name, elem.InnerText)
Console.WriteLine(" namespaceURI=" + elem.NamespaceURI)
end sub
end class
You can try that one. XmlElement.Name gives the name of the node.
// Daniel
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I need to process some fairly large (>.75Gb) XML files, (actually in a batch, but once I can cope with one, he said, optimistically...)
At the moment, I have used SAX and a FSA to parse and convert the data from XML to an internal format. However, the format changes rapidly, and the FSA is a pain to keep amending. The size means that DOM directly is a no-no.
What I had in mind was to match specific tags, and collect all the contained stuff into a smaller DOM document, which I can then process in a simplified way.
I've used DOM to read stuff before, and obviously, SAX, but not to write, so I'd be grateful for any hints or pointers to samples of this kind of thing, as I'm assuming I'm not the first to consider this option.
Steve S
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I have been contemplating writing a generic calculation engine for Tax Computations, and was wondering if it would be possible to write such a thing that required each years coputational calculations to be defined in XML and data then to also be held in XML. The generic calculation component then uses the instructions in XML to explain how to do the calculation so that the same component can be used for any years tax computation, and output numerous results to a separate XML file.
I would appreciate any advice any of you "experts" can give me on such a project. Would it be possible??
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>> Would it be possible??
Sure. Your basically talking about a XML Processor much the same as XSLT or any other. You define a language and then develop the processor right? Not that it is a simple task to complete but the concept is simple.
"No matter where you go, there your are..." - Buckaoo Banzi
-pete
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I want to add an XML listing to a web page - like having source code in a CP article. Is there a program that will convert it to XML and colour the tags etc?
Thanks
Davy
My Personal Blog - Homepage.
Scottish News - Angus Blog, Perth Blog and Dundee Blog
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Davy Mitchell wrote:
I want to add an XML listing to a web page - like having source code in a CP article. Is there a program that will convert it to XML and colour the tags etc?
You can use the HTML <xml> tag, the ASP.NET <asp:XML> tag, or an iframe with its source being an XML file.
"Blessed are the peacemakers, for they shall be called sons of God." - Jesus
"You must be the change you wish to see in the world." - Mahatma Gandhi
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Hi, I am trying to create a generic xsl file to display query results. The column names depend upon the query, so I dont want to hardcode them. What I have is close to what I need, but I get one row of column headings for each row of data. (Just one would do!)
I can see that the for-each command in the table header is causing the problem, but I'm not sure how to select just one row. Any advise would be really helpfull. Thanks. 
My data looks like this:
<?xml-stylesheet type="text/xsl" href="generic.xsl"?>
<?xml version="1.0" encoding="UTF-8"?>
<dataroot xmlns:od="urn:schemas-microsoft-com:officedata">
<ResultRow>
<Code>AVL1A</Code>
<Name>RED</Name>
<Quantity>9437.914</Quantity>
</ResultRow>
<ResultRow>
<Code>XYZ</Code>
<Name>BLUE</Name>
<Quantity>9437.914</Quantity>
</ResultRow></code>
And my xsl looks like this (portion):
<code><table>
<thead>
<xsl:for-each select="//ResultRow">
<tr align="center">
<xsl:for-each match=".//">
<td><strong><xsl:node-name /></strong></td>
</xsl:for-each>
</tr>
</xsl:for-each>
</thead>
<tbody>
<xsl:for-each select="//ResultRow">
<tr><xsl:for-each match=".//">
<td><xsl:value-of /></td>
</xsl:for-each></tr>
</xsl:for-each>
</tbody>
</table></code>
Joanne
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<thead><br />
<tr align="center"><br />
<xsl:for-each match="//ResultRow[1]/*"><br />
<td><strong><xsl:value-of select="name()" /></strong></td><br />
</xsl:for-each><br />
</tr><br />
</thead>
"When the only tool you have is a hammer, a sore thumb you will have."
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Thanks, that's working now!
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Hi,
I'm using MSXML to produce a XML Doc from a Tree Control in my VC++ program. I am getting an weird error while trying to create XMLNodes.
IXMLDOMNodePtr DOMNodePtr[100];
DOMNodePtr[i]=ptrDocIP->createElement(strRoot.AllocSysString()); //ptrDocIP is of type IXMLDOMDocumentPtr and sysRoot is CString
I'm using the above statement in a fuction and I call that fuction repeatedly to add new nodes. When I add the first nodes, I don't get any exception, but, second time I get an Exception and the program terminated.
I tried with createNode function and got the same error.
Can anybody help?
Binayak Bhattacharyya
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whats the exception?
"When the only tool you have is a hammer, a sore thumb you will have."
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Hi
This probably doesn´t help but when I used
lstElement->Item(0)->NamespaceURI in creating an xmlElemnt
XmlElement *NameElement = doc->CreateElement("Name",lstElement->Item(0)->NamespaceURI);
given that doc is an XMLDocument and lstElement is of type XmlNodelist. I got it to work.
But again, I assume that there are two different problems. I added elements to an existing XMLDocument.
Regards
Daniel
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Hi !
I have a problem with serializing a class, which has a variable with an abstract-class-type.
If I'm using the specific class Test2, everything works fine,
but when I use the abstract class Test, I get the following error-message:
An unhandled exception of type 'System.InvalidOperationException' occurred in system.xml.dll
Additional information: There was an error generating the XML document.
Does anybody know whats the matter here?
using System;
using System.Xml;
using System.Xml.Serialization;
using System.IO;
namespace xmlTest
{
class Class1
{
[STAThread]
static void Main(string[] args)
{
myObject o = new myObject();
XmlSerializer mySerializer = new XmlSerializer(typeof(myObject));
StreamWriter myWriter = new StreamWriter("test.xml");
mySerializer.Serialize(myWriter, o);
}
}
public class myObject
{
//public Test2 t = new Test2();
public Test t = new Test2();
}
public abstract class Test
{
public string s = "Test";
}
public class Test2:Test
{
new public string s="Test2";
}
}
Thank you !!!!
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As the documentation states, serializable classes must have a publicly accessible default constructor because they are instantiated. Abstract classes cannot be instantiated, however. That is the problem.
The solution is easy: don't hardcode the type (using typeof in your example) in your serializable code. For one, one of the benefits (one could say, the "point") of using abstract classes is that you can use a generic to refer to multiple types without caring about the specific Type of the object. Instead, use o.GetType().
Remember that in OO, even though a variable might be declared as Test or Object (pulling examples from your code), they will still be instances of myObject or Test2. So, using o.GetType() will still return the Type for myObject (even if it were declared as an Object).
If you use that in the constructor for the XmlSerializer, you shouldn't have any problems. This way, also, you don't hardcode that the serializer only accepts myObject. You will want to, however, use a condition or something before serializing to make sure that the object to be serialized is a Test derivative:
public void SaveTest(Test t)
{
XmlSerializer serializer = new XmlSerializer(t.GetType());
StreamWriter writer = new StreamWriter("test.xml");
serializer.Serialize(writer, t);
}
public void Save(object o)
{
if (o is Test)
SaveTest(o as Test);
}
-----BEGIN GEEK CODE BLOCK-----
Version: 3.21
GCS/G/MU d- s: a- C++++ UL@ P++(+++) L+(--) E--- W+++ N++ o+ K? w++++ O- M(+) V? PS-- PE Y++ PGP++ t++@ 5 X+++ R+@ tv+ b(-)>b++ DI++++ D+ G e++>+++ h---* r+++ y+++
-----END GEEK CODE BLOCK-----
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I started using SaveFileDialog in my application.
But the problem is that once I save anything to a directory different than the one that
the application is stored in, an error appears because the application can't get files in this way:
XmlTextReader reader = new XmlTextReader("loc.xml");
schemaColl.Add(null, "XMLSchema.xsd");
I can't store the absut path in my application (like that: schemaColl.Add(null, "d:\MyApp\\\XMLSchema.xsd");
Is there any simple method how to solve this problem?
Many thanks for help in advance.
misiek
-------------------------------------------------------------
My problem has been solved.
The solutions is here
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I'm transforming xml and want to strip out null characters in the elements.
The elements look like this:
<myEl>���</myEl>
My XSL rules look like this:
<xsl:if test="string-length(/myEl) > 0">
<outEl><xsl:value-of select="/myEl"/></outEl>
</xsl:if>
For the 'select=' attribute, I've tried:
- translate(/myEl, �, 'x')
- translate(/myEl, '�', 'x')
- translate(/myEl, '�', 'x')
- translate(/myEl, '�', 'x')
- translate(/myEl, '�', 'x')
- translate(string(/myEl), '�', 'x')
- translate(string(/myEl), '�', 'x')
I've also tried <xsl:strip-space> at the root, but no effect.
I'm translating null to 'x' for now so I know that I'm capturing the nulls correctly, but never get a match; my output always has <myEl> with nulls embedded in it. The output xml is otherwise well-formed.
Anyone know what I'm doing wrong?
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I solved the problem, which had nothing to do with the XPath queries. My XSL stylesheet is a Content file in a VS.NET project. I forgot that VS DOESN'T copy content files to the output folder. Thus, all of my stylesheet edits were never used!
This is what I ultimately used to remove the nulls:
translate(/myEl, '�', '')
Does anyone know why VS doesn't copy content files to output folder?
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In the app i am currently building, I need to display, and print, reports of data records (tables, images, etc). I want to offload the formatting work to someone else, and am currently attempting to give this reponsibility to the WebBrowser activeX control.
I pump out an XML file of the report, and have an XSLT file to format this to html. However, as pretty as this looks in the webbrowser control, it does not print well, as html is continuous.
I have looked into XSL-FO, but this seems too complex for my task. I would like to use print templates in IE, however when i attempt to work with print templates in an xsl file I encounter parsing errors. Any ideas?
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you need to use CDATA to stop xslt trying to parse the print templates..
<![CDATA[<br />
stuff that is not xml (in your case print templates)<br />
]]>
"When the only tool you have is a hammer, a sore thumb you will have."
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Hi
i seem to be getting an intermitant error
in my application when i send XML posts to our
web service
the error is
Run-time error '-2146697211 (800c0005)'
does ne1 have any ideas ? it only seems to happen
ocassionally
thnkas
si
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I am trying to figure out if the following is even possible:
XML file is as follows:
<section1>
<section2 attribA="123">
<param ref="paramX">456</param>
<param ref="paramY">789</param>
</section2>
</section1>
Windows Form App contains a pulldown and a datagrid.
The pulldown contains the all the "attribA" values in "section2" of the XML file,
and the datagrid is 2 columns, containg the "param" elements (displays "paramX | 456" in the 2 columns) for the selected element in "section2".
Can this be done with datasets & data binding? Or must I reparse the entire XmlDoc with every change event on the pulldown?
I haven't had much luck at it so far..
~Mike Stanbrook
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Granted I am much the novice, when it comes to programming, but in my search for a QUALITY book that really allows someone to learn XML, one step at a time, appears NOT to exist!
I have reviewed just about all the books out there, and am a bit surprised that none of them really TEACH xml. Many discuss this and that, but none really set up the foundation and build from there.
If anyone has 'other' information or can give me some ISBN #'s that may be more in-line with my need, I'd SURE appreciate the info.
My primary focus with XML is implementing into ASP.NET at work. Unfortunately for me, my employer does not like to spend money on formal classroom training, so anything I need to learn, I must do by Self-Study.
For those who've been posting articles on "The Code Project", all I can say is THANKS! Without many of the ASP.NET and C# articles, I would be totally bald (Crew cut now). 
Regards.
KoalaCowboy
Knowledge Monger
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try the Beginning XML by WROX
Actually I like all WROX books.
www.wrox.com
you should be able to find all of them at amazon..
theJazzyBrain
Wise is he who asks good questions, not he who gives good answers
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I second that!
Excellent book.
Author is David Hunter.
~Mike Stanbrook
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