Adding an attribute using XmlWriter

Question

I am trying to add the following attribute to a node using an XmlWriter but nothing seems to work, does anyone have any ideas?

<news:news>

I am trying to achieve the following:

 <url>
    <loc>http://www.example.org/business/article55.html</loc>
    <news:news>
      <news:publication>
        <news:name>The Example Times</news:name>
        <news:language>en</news:language>
      </news:publication>
      <news:access>Subscription</news:access>
      <news:genres>PressRelease, Blog</news:genres>
      <news:publication_date>2008-12-23</news:publication_date>
      <news:title>Companies A, B in Merger Talks</news:title>
      <news:keywords>business, merger, acquisition, A, B</news:keywords>
      <news:stock_tickers>NASDAQ:A, NASDAQ:B</news:stock_tickers>
    </news:news>
  </url>

Thanks

That's not an attribute - it's the start of an element. You need to be very precise in your terminology here. Can you post a complete example of what you're trying to achieve? — Jon Skeet
– Jon Skeet, Commented Nov 30, 2012 at 15:27
What do you mean by "with the extra part on the end"? Again, a complete example would really help. If you're vague with the question, we're just not going to be able to help you. Please read tinyurl.com/so-list — Jon Skeet
– Jon Skeet, Commented Nov 30, 2012 at 15:28
I have added it to the description what I am trying to achieve — Funky
– Funky, Commented Nov 30, 2012 at 15:29
Right. So again, please post what you've tried. Read the link I gave you before - we shouldn't be having to ask this many questions... — Jon Skeet
– Jon Skeet, Commented Nov 30, 2012 at 15:35

Justin · Accepted Answer · 2012-11-30 16:08:32Z

1

Take a look at the following link for how to handle namespaces with the XmlWriter

Namespace Handling in the XmlWriter

You can manually write out the namespace declaration using the WriteAttributeString method, and then use the WriteStartElement(String, String) overload to associate future elements with that namespace, like so

writer.WriteStartElement("root");
writer.WriteAttributeString("xmlns", "x", null, "urn:1");
writer.WriteStartElement("item", "urn:1");
writer.WriteEndElement();
writer.WriteStartElement("item", "urn:1");
writer.WriteEndElement();
writer.WriteEndElement();

edited Nov 30, 2012 at 16:08

Justin

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answered Nov 30, 2012 at 15:36

Tallek

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1 Comment

Funky Over a year ago

I cant see anywhere on that page or this code how to achieve the code

Denis · Accepted Answer · 2012-11-30 15:42:50Z

0

    using System;
    using System.Xml;

    class Program
    {
        static void Main(string[] args)
        {
            XmlWriter writer = new XmlTextWriter(Console.Out);
            writer.WriteStartElement("root");
            writer.WriteAttributeString("news", "http://www.stackoverflow.com");
            writer.WriteStartElement("news:news");
            writer.WriteStartElement("news:publication");
            writer.WriteElementString("news:name", "The Example Times");
            writer.WriteElementString("news:language", "en");
            // etc
            writer.WriteEndElement();
            writer.WriteEndElement();
            writer.WriteEndElement();
            Console.ReadKey(true);
        }
    }

answered Nov 30, 2012 at 15:42

Denis

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2 Comments

Funky Over a year ago

I did this and got the following error: Invalid name character in 'news:news'. The ':' character, hexadecimal value 0x3A, cannot be included in a name

Funky Over a year ago

thats great but it doesn't work when you have the items inside another node

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