/// <summary>
/// Reads a byte from the file.
/// </summary>
/// <param name="index">the index of the byte to read</param>
/// <returns>the byte</returns>
public byte ReadByte(long index)
{
if (_writes.Contains(index))
{
return(_writes[index]);
}
if (_fileStream.Position != index)
{
_fileStream.Position = index;
}
byte res = (byte)_fileStream.ReadByte();
return(res);
}
