Be.Windows.Forms.DynamicFileByteProvider.HasChanges C# (CSharp) Method

        public bool HasChanges()
        {
            if (_readOnly)
                return false;

            if (_totalLength != _stream.Length)
            {
                return true;
            }

            long offset = 0;
            for (DataBlock block = _dataMap.FirstBlock; block != null; block = block.NextBlock)
            {
                FileDataBlock fileBlock = block as FileDataBlock;
                if (fileBlock == null)
                {
                    return true;
                }

                if (fileBlock.FileOffset != offset)
                {
                    return true;
                }

                offset += fileBlock.Length;
            }
            return (offset != _stream.Length);
        }