Getting SignedXml output with line breaks

Is there a way to make SignedXml class generate resulting XML with linebreaks between elements?

Because now, doing this:

{
	SignedXml^ signedXml = gcnew SignedXml();
	.....
	signedXml->ComputeSignature();
	//Write to file
XmlDocument^ xmlDoc = gcnew XmlDocument();
	xmlDoc->PreserveWhitespace = true;
	XmlNode^ signedNode = xmlDoc->ImportNode(signedXml->GetXml(), true);
	xmlDoc->AppendChild(signedNode);

	XmlTextWriter^ xmltw = gcnew XmlTextWriter("d:\\output xml.xml", gcnew Text::UTF8Encoding(false));
	xmlDoc->WriteTo(xmltw);
	xmltw->Close();
//Write to file. 2nd method
	WriteXMLFile(signedXml->GetXml(), "d:\singed xml.xml");
}

void WriteXMLFile(XmlNode^ XML, String^ FilePath)
{
	XmlWriterSettings^ settings = gcnew XmlWriterSettings();
	settings->Encoding = System::Text::Encoding::UTF8;
	settings->OmitXmlDeclaration = true;
	settings->NewLineChars = "\n";
	settings->Indent;
	XmlWriter^ xwriter = XmlWriter::Create(FilePath, settings);
	XML->WriteTo(xwriter);
	xwriter->Close();
}

I get XML in a single line, like this:

<Signature xmlns="http://www.w3.org/2000/09/xmldsig#"><SignedInfo><CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315" />

What I want, is to get an easily readable XML like this:

<Signature xmlns="http://www.w3.org/2000/09/xmldsig#"><SignedInfo><CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315" />