Question

A longwinded question – please bear with me!

I want to programatically create an XML document with namespaces and schemas. Something like

<myroot      xmlns='http://www.someurl.com/ns/myroot'      xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'      xsi:schemaLocation='http://www.someurl.com/ns/myroot http://www.someurl.com/xml/schemas/myschema.xsd'>      <sometag>somecontent</sometag>  </myroot> 

I’m using the rather splendid new LINQ stuff (which is new to me), and was hoping to do the above using an XElement.

I’ve got a ToXElement() method on my object:

  public XElement ToXElement()   {      XNamespace xnsp = 'http://www.someurl.com/ns/myroot';       XElement xe = new XElement(         xnsp + 'myroot',            new XElement(xnsp + 'sometag', 'somecontent')         );       return xe;   } 

which gives me the namespace correctly, thus:

<myroot xmlns='http://www.someurl.com/ns/myroot'>    <sometag>somecontent</sometag> </myroot> 

My question: how can I add the schema xmlns:xsi and xsi:schemaLocation attributes?

(BTW I can’t use simple XAtttributes as I get an error for using the colon ‘:’ in an attribute name…)

Or do I need to use an XDocument or some other LINQ class?

Thanks…

Answer 1

From this article, it looks like you new up more than one XNamespace, add an attribute in the root, and then go to town with both XNamespaces.

// The http://www.adventure-works.com namespace is forced to be the default namespace. XNamespace aw = 'http://www.adventure-works.com'; XNamespace fc = 'www.fourthcoffee.com'; XElement root = new XElement(aw + 'Root',     new XAttribute('xmlns', 'http://www.adventure-works.com'), ///////////  I say, check out this line.     new XAttribute(XNamespace.Xmlns + 'fc', 'www.fourthcoffee.com'), ///////////     new XElement(fc + 'Child',         new XElement(aw + 'DifferentChild', 'other content')     ),     new XElement(aw + 'Child2', 'c2 content'),     new XElement(fc + 'Child3', 'c3 content') ); Console.WriteLine(root); 

Here’s a forum post showing how to do the schemalocation.