public GridError(IRecordRead rec)
{
Id = rec.GetInt("Id");
Description = rec.GetString("Description");
Params = rec.GetString("Params");
Time = rec.GetTime("Time").ToString();
_command = rec.GetString("Command");
_context = rec.GetString("Context");
Command = _command + "\n" + _context;
_periodBegin = rec.GetTimeNull("PeriodBegin");
_periodEnd = rec.GetTimeNull("PeriodEnd");
Period = _periodEnd == null ? null : (_periodBegin + "\n" + _periodEnd);
}