XDocument: Create custom declaration

Question

I want to create Windows Media Player playlist files with XDocument. Therefore I have to create this declaration:

<?wpl version="1.0"?>

However, the XDeclaration object doesn't allow to replace "xml" with "wpl". Is there a proper way to handle this?

Tomalak · Accepted Answer · 2015-02-14 12:04:14Z

2

That's a processing instruction, not an XML declaration.

new XProcessingInstruction("wpl", "version=\"1.0\"")

Your document is still an XML document, so you can additionally include <?xml version="1.0"?> at the top, but that's optional.

answered Feb 14, 2015 at 12:04

Tomalak

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4 Comments

bytecode77 Over a year ago

How do I add this object to the XDocument?

Tomalak Over a year ago

I think my code sample should give you enough to go on. Adding a processing instruction works like adding any other type of node. You'll figure it out.

bytecode77 Over a year ago

But the wpl file format as generated by Windows Media Player only has the <wpl /> instruction. Can this be done somehow?

Tomalak Over a year ago

As I was trying to say. The XML declaration is optional. You can have it or omit it, that won't change very much. The XML declaration is for configuring the XML parser, it sets the version (1.0 or 1.1) and encoding of the file. A processing instruction is for configuring the application that sits behind the parser. You can have both and nothing will break. See stackoverflow.com/a/4679212/18771

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