xcpSplit

        private int Split(string xcpFile, uint[] splitAt)
        {
            if (!File.Exists(xcpFile)) return 1;

            using (FileStream rfs = new FileStream(xcpFile, FileMode.Open, FileAccess.Read, FileShare.Read))
            {
                byte[] buffer = new byte[4096];
                long LeftToRead = 0;
                int loop = 0;

                foreach (uint readTo in splitAt)
                {
                    string FilePath = Path.ChangeExtension(xcpFile, ".part" + Array.IndexOf(splitAt, readTo) + 1);
                    //if (readTo == 0) rfs.s;
                    LeftToRead = readTo - (buffer.Length * loop);
                    
                    using (FileStream wfs = new FileStream(FilePath, FileMode.Create, FileAccess.Write))
                    {
                        loop = 0;
                        while (LeftToRead > 0)
                        {
                            loop += 1;
                            rfs.ReadAsync(buffer, 0, buffer.Length);
                            wfs.WriteAsync(buffer, 0, buffer.Length);
                            LeftToRead = readTo - (buffer.Length * loop);
                        }
                        
                    }
                }
            }
                return 0;
        }