XmlTextWriter to format out xml with newline and indent.

This is sample from my project to serializer object with utf8.

XmlSerializer xmlFormat = new XmlSerializer( typeof( LeaveObjectItem ) );

string xml = String.Empty;

Encoding utf8EncodingWithNoByteOrderMark = new UTF8Encoding( false );
using (MemoryStream stream = new MemoryStream())
{
XmlTextWriter xtw = new XmlTextWriter( stream, utf8EncodingWithNoByteOrderMark );
xtw.Formatting = Formatting.Indented;
xtw.Indentation = 4;
xmlFormat.Serialize( xtw, ItemToExport );
xml = Encoding.UTF8.GetString( stream.ToArray() );
}

using (StreamWriter outfile =
new StreamWriter( fullpath, false, System.Text.Encoding.UTF8 ))
{
outfile.Write( xml.Replace( ">�<", ">DBNULL<" ) );
}

Xml Serializer in memory.

My object name is request.
and I send TextReader parameter to ChargeRequestFactory Object
This explain simple 2 way to do about this.
But because StringWriter has alway create xml with utf 16 encoding
and I need UTF 8 instead so my choice is choose to use in second solution

Yes we can use StringWriter to create XML with UTF 8 but it must create new
Class and override Encoding so Second task look enough for me.

(1)
StringWriter stringWriter = new StringWriter();

xmlSerializer.Serialize( stringWriter, request );

StringReader stringReader = new StringReader( stringWriter.ToString() );

ChargeRequestFactory factory = new ChargeRequestFactory( stringReader );

(2)
Stream s = new MemoryStream();

XmlWriter xw = new XmlTextWriter( s, Encoding.UTF8 );

xmlSerializer.Serialize( xw, request );

TextReader tr = new StreamReader( s );

s.Seek( 0, SeekOrigin.Begin );

ChargeRequestFactory factory = new ChargeRequestFactory( tr );

In ChargeRequest function I have Deserialize to get XML Back to Object.