Solved

Append node to XML file?

Posted on 2006-11-04
10
2,260 Views
Last Modified: 2013-11-19
How can I add the following node:
<user>
     <name> xxx </name>
     <id>1</id>
     <mark A="10" B="20" />
</user>


To the following XML file using XMLDocument or XMLwriterText:

<users>
     <user>
         <name> yyy</name>
          <id>1</id>
          <mark A="11" B="12" />
     </user>
     <user>
           <name> zzz</name>
           <id>2</id>
           <mark A="34" B="50" />
     </user>
</users>
0
Comment
Question by:Abdu_Allah
  • 5
  • 5
10 Comments
 
LVL 52

Expert Comment

by:Carl Tawn
ID: 17873641
You could use something like:

            XmlDocument doc = new XmlDocument();
            doc.Load("C:\\test.xml");

            XmlNode user = doc.CreateElement("user");
            user.AppendChild(doc.CreateElement("name")).InnerText = "xxx";
            user.AppendChild(doc.CreateElement("id")).InnerText = "1";

            XmlNode mark = doc.CreateElement("mark");
            mark.Attributes.SetNamedItem(doc.CreateAttribute("A")).InnerText = "10";
            mark.Attributes.SetNamedItem(doc.CreateAttribute("B")).InnerText = "20";

            user.AppendChild(mark);
            doc.FirstChild.AppendChild(user);

            doc.Save("C:\\test2.xml");
0
 
LVL 3

Author Comment

by:Abdu_Allah
ID: 17874504
Whay I got the following error:
System.InvalidOperationException: The current node cannot contain other nodes
Source Error:
Line 126:     doc.FirstChild.AppendChild(user)

 
0
 
LVL 52

Expert Comment

by:Carl Tawn
ID: 17874583
What does the XML you are appending to look like in full ? Is there a Schema or DTD associated with it ?
0
 
LVL 3

Author Comment

by:Abdu_Allah
ID: 17874714
No schema no DTD
0
 
LVL 52

Expert Comment

by:Carl Tawn
ID: 17874715
What does your full XML look like ?
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 
LVL 3

Author Comment

by:Abdu_Allah
ID: 17874716
Here is the full file:

<?xml version="1.0" encoding="utf-8"?>
<users>
     <user>
         <name> yyy</name>
          <id>1</id>
          <mark A="11" B="12" />
     </user>
     <user>
           <name> zzz</name>
           <id>2</id>
           <mark A="34" B="50" />
     </user>
</users>
0
 
LVL 52

Expert Comment

by:Carl Tawn
ID: 17874717
Try it with just the snippet you posted before and see if that works.
0
 
LVL 3

Author Comment

by:Abdu_Allah
ID: 17874728
Same error.
0
 
LVL 52

Accepted Solution

by:
Carl Tawn earned 500 total points
ID: 17874729
Ah, ok. Change the code to:

            XmlDocument doc = new XmlDocument();
            doc.Load("C:\\test.xml");

            XmlNode user = doc.CreateElement("user");
            user.AppendChild(doc.CreateElement("name")).InnerText = "xxx";
            user.AppendChild(doc.CreateElement("id")).InnerText = "1";

            XmlNode mark = doc.CreateElement("mark");
            mark.Attributes.SetNamedItem(doc.CreateAttribute("A")).InnerText = "10";
            mark.Attributes.SetNamedItem(doc.CreateAttribute("B")).InnerText = "20";

            user.AppendChild(mark);
           
            XmlNode users = doc.SelectSingleNode("/users");
            users.AppendChild(user);

            doc.Save("C:\\test2.xml");
0
 
LVL 3

Author Comment

by:Abdu_Allah
ID: 17874760
Many thanks
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Align Buttons next to each other 2 25
ASP.Net Session State alternatives 3 57
dynamic menu in asp.net c# 11 57
asp.net mvc return json 2 54
There are two main kinds of selectors in CSS: One is base selector like h1, h2, body, table or any existing HTML tags.  For instance, the following rule sets all paragraphs (<p> elements) to red: (CODE) CSS also allows us to define our own custom …
International Data Corporation (IDC) prognosticates that before the current the year gets over disbursing on IT framework products to be sent in cloud environs will be $37.1B.
Viewers will learn about if statements in Java and their use The if statement: The condition required to create an if statement: Variations of if statements: An example using if statements:
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

16 Experts available now in Live!

Get 1:1 Help Now