c# - XDocument: saving XML to file without BOM -

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i'm generating utf-8 xml file using xdocument.

xdocument xml_document = new xdocument(                     new xdeclaration("1.0", "utf-8", null),                     new xelement(root_name,                                         new xattribute("note", note)                 )             ); ... xml_document.save(@file_path);

the file generated correctly , validated xsd file success.

when try upload xml file online service, service says file wrong @ line 1; have discovered problem caused bom on first bytes of file.

do know why bom appended file , how can save file without it?

as stated in byte order mark wikipedia article:

while unicode standard allows bom in utf-8 it not require or recommend it. byte order has no meaning in utf-8 bom serves identify text stream or file utf-8 or converted format has bom

is xdocument problem or should contact guys of online service provider ask parser upgrade?

use xmltextwriter , pass xdocument's save() method, way can have more control on type of encoding used:

var doc = new xdocument(     new xdeclaration("1.0", "utf-8", null),     new xelement("root", new xattribute("note", "boogers")) ); using (var writer = new xmltextwriter(".\\boogers.xml", new utf8encoding(false))) {     doc.save(writer); }

the utf8encoding class constructor has overload specifies whether or not use bom (byte order mark) boolean value, in case false.

the result of code verified using notepad++ inspect file's encoding.


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