System.Windows.Forms.DynamicFileByteProvider.ReadByte C# (CSharp) Method

        public byte ReadByte(long index)
        {
            long blockOffset;
            DataBlock block = GetDataBlock(index, out blockOffset);
            FileDataBlock fileBlock = block as FileDataBlock;
            if (fileBlock != null)
            {
                return ReadByteFromFile(fileBlock.FileOffset + index - blockOffset);
            }
            else
            {
                MemoryDataBlock memoryBlock = (MemoryDataBlock)block;
                return memoryBlock.Data[index - blockOffset];
            }
        }