System.Data.DataSet.WriteXml C# (CSharp) Method

        public void WriteXml(Stream stream) => WriteXml(stream, XmlWriteMode.IgnoreSchema);

        public static void SaveDataSetAsXml(DataSet set, string fileName)
        {
            string file = Regex.Replace( fileName, extPattern, fileName );
             fileName = VerifyFileExt( fileName, ".xml" );

             set.WriteXml( fileName );
             set.WriteXmlSchema( file + ".xsd" );
        }