System.IO.BinaryReader.PeekChar C# (CSharp) Method

        public virtual int PeekChar()
        {
            if (_stream == null)
            {
                throw new ObjectDisposedException(null, SR.ObjectDisposed_FileClosed);
            }

            if (!_stream.CanSeek)
            {
                return -1;
            }

            long origPos = _stream.Position;
            int ch = Read();
            _stream.Position = origPos;
            return ch;
        }

        private static BDictionary ReadDictionary(BinaryReader binaryReader)
        {
            Contract.Requires(binaryReader != null);

            int i = binaryReader.ReadByte();
            if (i != 'd')
            {
                throw Error();
            }

            BDictionary dict = new BDictionary();

            try
            {
                for (int c = binaryReader.PeekChar(); ; c = binaryReader.PeekChar())
                {
                    if (c == -1) throw Error();
                    if (c == 'e')
                    {
                        binaryReader.ReadByte();
                        break;
                    }
                    BString k = ReadString(binaryReader);
                    IBElement v = ReadElement(binaryReader);
                    dict.Add(k, v);
                }
            }
            catch (BencodingException) { throw; }
            catch (Exception e) { throw Error(e); }

            return dict;
        }