xml Create xml file

public static void CreateXmlFile(string FolderName, string FileName, string strMyXml)
        {
            FolderName = "100G";
            FileName = "GridData";
            strMyXml = "<Employee>" +
                                   "<firstName>" + "Santosh" + "</firstName>" +
                                   "<lastName>" + "Sahoo" + "</lastName>" +
                        "</Employee>";

            string path = @"C:\FDMXml\" + FolderName + "";
            if (!Directory.Exists(path))
            {
                Directory.CreateDirectory(path);
            }

            XmlDocument doc = new XmlDocument();
            doc.LoadXml(strMyXml);
            doc.Save(path + "\\" + "" + FileName + "" + ".xml");
        }