XmlExtensions.cs

    public static class ReportExtensions
    {

        public static string Serialize(this Report report)
        {
            var stream      = SerializeToStream(report);
            var finalString = ReadStream(stream);

            return finalString;
        }

        private static string ReadStream(MemoryStream stream)
        {
            stream.Position = 0;
            var reader      = new StreamReader(stream, Encoding.Default);
            var finalString = reader.ReadToEnd();

            return finalString;
        }

        private static MemoryStream SerializeToStream(Report report)
        {
            var stream     = new MemoryStream();
            var serializer = new XmlSerializer(typeof (Report));

            serializer.Serialize(stream, report);
            return stream;
        }
    }