Create XML through XmlWriterSettings => the fastest,efficient way instead using DOM

public static MemoryStream CreateXMltoStream(string emailsubject,string emailfrom,string emailto)

{

MemoryStream stream=new MemoryStream();

XmlWriterSettings thesettings = new XmlWriterSettings();

//writing to stream default is UTF8

Encoding x=System.Text.Encoding.GetEncoding("ISO-8859-1");

thesettings.Encoding = x;

thesettings.Indent = true;

//Write the header

thesettings.OmitXmlDeclaration = false;

thesettings.NewLineOnAttributes = true;

using (XmlWriter writer = XmlWriter.Create(stream, thesettings))

{

writer.WriteRaw(@"<!DOCTYPE MEDVRI_1 SYSTEM ""MEDVRI_1.dtd"">");

writer.WriteStartElement("MEDVRI_1");

writer.WriteStartElement("email");

writer.WriteStartElement("email.subject");

writer.WriteValue(emailsubject);

writer.WriteEndElement();

writer.WriteStartElement("email.from");

writer.WriteValue(emailfrom);

writer.WriteEndElement();

writer.WriteStartElement("email.to");

writer.WriteValue(emailto);

writer.WriteEndElement();

writer.WriteEndElement();

writer.WriteEndElement();

//free the memory

writer.Flush();

writer.Close();

return stream;

}