C# - Datei Teilweise einlesen (gestückelt)

            public static byte[] GetBytesFromFile(string FileName, long start, int count)
            {
                FileStream fs = new FileStream(FileName, FileMode.Open);
                BinaryReader reader = new BinaryReader(fs);

                reader.BaseStream.Position = start;
                byte[] Data = reader.ReadBytes(count);

                reader.Close();
                fs.Close();

                return Data;
            }