Menu
I'm trying to read in an XML configuration file, do a few tweaks (finding and removing or adding an element) and save it again. I want this edit to be as non-intrusive as possible since the file will be under source control and I don't want inconsequential changes to cause merge conflicts, etc. This is roughly what I've got:
XDocument configDoc = XDocument.Load(fileName, LoadOptions.PreserveWhitespace);
// modifications to configDoc here
configDoc.Save(fileName, SaveOptions.DisableFormatting);
There's a few problems that pop up here:
encoding="utf-8" gets added to the xml declaration.<tag attr="val"/> gets changed to <tag attr="val" />
Is there any way to be less intrusive with XDocument or will I have to just try and do string editing to get what I want?
677
The LINQ to XML object model does not store whether an element parsed is marked up as <foo/> or <foo /> so when saving back such information is lost. If you want to ensure a certain format then you could extend an XmlWriter implementation and override its http://msdn.microsoft.com/en-us/library/system.xml.xmlwriter.writeendelement.aspx but that way you would also not preserve the input format, rather you would then write out any empty elements as <foo/> or whatever format you implement in your method.
There are other changes that can happen, for instance when loading the file
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:xhtml="http://www.w3.org/1999/xhtml">
<head>
<title>Example</title>
</head>
<body>
<h1>Example</h1>
</body>
</html>
and saving it back the result is
<xhtml:html xmlns="http://www.w3.org/1999/xhtml" xmlns:xhtml="http://www.w3.org/1999/xhtml">
<xhtml:head>
<xhtml:title>Example</xhtml:title>
</xhtml:head>
<xhtml:body>
<xhtml:h1>Example</xhtml:h1>
</xhtml:body>
</xhtml:html>
so don't expect markup details to be preserved when loading/saving with XDocument/XElement.
130
To avoid the declaration in the header of the document you can use the following
XmlWriterSettings settings = new XmlWriterSettings();
settings.OmitXmlDeclaration = true;
using (XmlWriter xw = XmlWriter.Create(fileName, settings))
{
doc.Save(xw);
}
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
