Creating namespace for XML element

Question

I have problem with adding new node (with namespace) to my xml document which is used to generating xaml. I'm doing it like this:

XmlElement richTextColumns = xmlDoc.CreateElement("local2:RichTextColumns");

but i receive error 0xC00CE01D (while calling xmlDoc.getxml). I have tried adding attribute xmlns:local2="using:App2.Common" to xmlDoc:

var att = xmlDoc.CreateAttribute("xmlns:local2");
att.InnerText = "using:Dictionary.Common";
xmlDoc.Attributes.SetNamedItem(att);

it results in this error

Object reference not set to an instance of an object.

Thank you in advance :)

Dan · Accepted Answer · 2012-08-06 16:10:34Z

1

If you'd like to create an element with a specific namespace use this call:

xmlDoc.CreateElementNS("using:Dictionary.Common", "local2:elementName")

edited Aug 6, 2012 at 16:10

answered Aug 6, 2012 at 15:52

Dan

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4 Comments

Krzysztof Kaczor Over a year ago

In win8 there is no xmlDoc.CreateElement that takes 3 args :/

Dan Over a year ago

What XML API are you using? I assumed you were using System.Xml.XmlDocument.

Krzysztof Kaczor Over a year ago

"there is no System.Xml.XmlDocument in system.xml" :/

Dan Over a year ago

I'm not familiar with this API, but it looks like you can use the CreateElementNS method, supplying "using:Dictionary.Common" and "local2:elementName" as parameters. I'll update the answer.

Kevin Mangold · Accepted Answer · 2012-08-06 15:36:59Z

1

According to http://msdn.microsoft.com/en-us/library/aa335908(v=vs.71), the CreateAttribute method with a single parameter does not set the namespace, but the name of the element. Try to use one of the other permutations of this method.

answered Aug 6, 2012 at 15:36

Kevin Mangold

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1 Comment

Krzysztof Kaczor Over a year ago

there is only function createElement with one arg in windows8

COLD TOLD · Accepted Answer · 2012-08-06 16:42:58Z

1

You can create an element as you would typically do and then load the document back and add the namespace atribute you are looking to add.

  XmlDocument doc = new XmlDocument();
    doc.LoadXml("link to yuor xml");
    XNamespace xmlns = "local2";
    public static void SetDefaultXmlNamespace(XElement xelem, XNamespace xmlns)
    {

        foreach(var e in xelem.Elements())
            e.SetDefaultXmlNamespace(xmlns);
    }

    doc.Root.SetDefaultXmlNamespace("local2")

edited Aug 6, 2012 at 16:42

answered Aug 6, 2012 at 15:49

COLD TOLD

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1 Comment

Krzysztof Kaczor Over a year ago

Could you write something more? I don't know how to access doc.Root element.

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