How to print <? Xml version = "1.0"?> Using XDocument

Question

Is there a way for XDocument to print the xml version using the ToString method? Output something like this:

<?xml version="1.0"?> <!DOCTYPE ELMResponse [ ]> <Response> <Error> ... 

I have the following:

 var xdoc = new XDocument(new XDocumentType("Response", null, null, "\n"), ... 

which will print this, which is good, but there is no version of "lt ;? xml" as mentioned above.

 <!DOCTYPE ELMResponse [ ]> <Response> <Error> ... 

I know that you can do this by manually outputting it. Just wanted to know if this is possible with XDocument.

Answer 1

Using XDeclaration. This will add a declaration.

But with ToString you will not get the desired result.

You need to use XDocument.Save () with one of its methods.

Full sample:

  var doc = new XDocument( new XDeclaration("1.0", "utf-16", "yes"), new XElement("blah", "blih")); var wr = new StringWriter(); doc.Save(wr); Console.Write(wr.ToString()); 

Answer 2

This is by far the best and most manageable way:

 var xdoc = new XDocument(new XElement("Root", new XElement("Child", "台北 Táiběi."))); string mystring; using(var sw = new MemoryStream()) { using(var strw = new StreamWriter(sw, System.Text.UTF8Encoding.UTF8)) { xdoc.Save(strw); mystring = System.Text.UTF8Encoding.UTF8.GetString(sw.ToArray()); } } 

and I say this only because you can change the encoding to anything by changing .UTF8 to .Unicode or .UTF32

Answer 3

Just enter this

 var doc = new XDocument ( new XDeclaration ("1.0", "utf-16", "no"), new XElement ("blah", "blih") ); 

And you get

 <?xml version="1.0" encoding="utf-16" standalone="no"?> <blah>blih</blah> 

Answer 4

VB.NET Solution CODE

the code

  Dim _root As XElement = <root></root> Dim _element1 As XElement = <element1>i am element one</element1> Dim _element2 As XElement = <element2>i am element one</element2> _root.Add(_element1) _root.Add(_element2) Dim _document As New XDocument(New XDeclaration("1.0", "UTF-8", "yes"), _root) _document.Save("c:\xmlfolder\root.xml") 

Output Note (please open the output in notepad)

  <?xml version="1.0" encoding="utf-8" standalone="yes"?> <root> <element1>i am element one</element1> <element2>i am element one</element2> </root>