In this tutorial I will show you how to save XML file to particular location. Here I m using System.IO.File.WriteAllText method will create new file and writes the xml string to the file with specified path. If the file is already exists then overwrites the file.
C# code to write the xml file:
var xmlpath = "~/sitemap.xml";
System.IO.File.WriteAllText(Server.MapPath(xmlpath), str);
XML file Created in the project: