How do i...how to add data in existing XML file

Question

0.00/5 (No votes)

See more:

Hey,

I have this Xml code :

XML

<pre><?xml version="1.0" encoding="UTF-8"?>
<PARAMETRE>
    <PARAMETRE_ITEM>
        <key>13042023</key>
        <value>10</value>
        <unit>mètres</unit>
        <name>Ceci est une description pour le paramètre 1.</name>
    </PARAMETRE_ITEM>
    <PARAMETRE_ITEM>
        <key>14042023</key>
        <value>5</value>
        <unit>secondes</unit>
        <name>Ceci est une description pour le paramètre 2.</name>
    </PARAMETRE_ITEM>
    <PARAMETRE_ITEM>
        <key>15042023</key>
        <value>3.14</value>
        <unit>degrés</unit>
        <name>Ceci est une description pour le paramètre 3.</name>
    </PARAMETRE_ITEM>
</PARAMETRE>

And I want to do create a script VBNET in order to add new data with a key, value, unit and name.

What I have tried:

dim parametre as System.Xml.XmlDocument;
parametre = new System.Xml.XmlDocument;
parametre.Load("c:\Test.xml");


dim catalog as System.Xml.XmlElement;
catalog.SetAttribute("1", "0385503822");
catalog.InnerText="Test";
catalog.AppendChild(catalog);


' save the XML document to disk
parametre.Save("c:\Test.xml");

Posted 13-Apr-23 22:52pm

Leo Bois

Updated 13-Apr-23 23:21pm

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Answer 1 · 2023-04-13T23:21:00

Solution 1

VB

catalog.AppendChild(catalog);

How do you expect that to work?
It appends the node to itself as a child node!
Even if it worked, when you tried to write it to a file, it would loop infinitely trying to get to the end of the children ...

Did you mean to add it to the parametre instead?

Posted 13-Apr-23 23:21pm

OriginalGriff

Comments

Richard Deeming 14-Apr-23 5:26am

It won't even get that far - catalog is never assigned a value, so the catalog.SetAttribute call will throw a NullReferenceException. :)

OriginalGriff 14-Apr-23 6:07am

That's why "Even if it worked" :D