c# - Escaping new-line characters with XmlDocument -

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my application generates xml using xmldocument. of data contains newline , carriage return characters.

when text assigned xmlelement this:

   e.innertext = "hello\nthere";

the resulting xml looks this:

<e>hello there</e>

the receiver of xml (which have no control over) treats new-line white space , sees above text as:

 "hello there"

for receiver retain new-line requires encoding be:

<e>hello&#xa;there</e>

if data applied xmlattribute, new-line encoded.

i've tried applying text xmlelement using innertext , innerxml output same both.

is there way xmlelement text nodes output new-lines , carriage-returns in encoded forms?

here sample code demonstrate problem:

string s = "return[\r] newline[\n] special[&<>\"']"; xmldocument d = new xmldocument(); d.appendchild( d.createxmldeclaration( "1.0", null, null ) ); xmlelement  r = d.createelement( "root" ); d.appendchild( r ); xmlelement  e = d.createelement( "normal" ); r.appendchild( e ); xmlattribute = d.createattribute( "attribute" ); e.attributes.append( ); a.value = s; e.innertext = s; s = s     .replace( "&" , "&amp;"  )     .replace( "<" , "&lt;"   )     .replace( ">" , "&gt;"   )     .replace( "\"", "&quot;" )     .replace( "'" , "&apos;" )     .replace( "\r", "&#xd;"  )     .replace( "\n", "&#xa;"  ) ; e = d.createelement( "encoded" ); r.appendchild( e ); = d.createattribute( "attribute" ); e.attributes.append( ); a.innerxml = s; e.innerxml = s; d.save( @"c:\temp\xmlnewlinehandling.xml" );

the output of program is:

<?xml version="1.0"?> <root>   <normal attribute="return[&#xd;] newline[&#xa;] special[&amp;&lt;&gt;&quot;']">return[ ] newline[ ] special[&amp;&lt;&gt;"']</normal>   <encoded attribute="return[&#xd;] newline[&#xa;] special[&amp;&lt;&gt;&quot;']">return[ ] newline[ ] special[&amp;&lt;&gt;"']</encoded> </root>

thanks in advance. chris.

how using httputility.htmlencode()?
http://msdn.microsoft.com/en-us/library/73z22y6h.aspx

ok, sorry wrong lead there. httputility.htmlencode() not handle newline issue you're facing.

this blog link out, though
http://weblogs.asp.net/mschwarz/archive/2004/02/16/73675.aspx

basically, newline handling controlled xml:space="preserve" attribute.

sample working code:

xmldocument doc = new xmldocument(); doc.loadxml("<root/>"); doc.documentelement.innertext = "1234\r\n5678";  xmlattribute e = doc.createattribute(     "xml",      "space",      "http://www.w3.org/xml/1998/namespace"); e.value = "preserve"; doc.documentelement.attributes.append(e);  var child = doc.createelement("child"); child.innertext = "1234\r\n5678"; doc.documentelement.appendchild(child);  console.writeline(doc.innerxml); console.readline();

the output read:

<root xml:space="preserve">1234 5678<child>1234 5678</child></root>

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