procedure THiSearchInFile._work_doSearch;
var
  F: TextFile;
  fn, t: string;
  BufIn : Array[0..65535] of Char;
  k: integer;
begin
  num := -1;
  str := ';
  fn := ReadString(_Data, _data_FileName, _prop_FileName);
  if not FileExists(fn) then exit;
  t := ReadString(_Data, _data_Text, _prop_Text);
  AssignFile(F, fn);
  Reset(F);
  SetTextBuf(F, BufIn);
  FStop := False;
  if t = ' then 
    while not eof(F) and not FStop do
    begin
      Readln(F, str);
      inc(num); // счетчик строк
      _hi_onEvent(_event_onSearch, str);
    end
  else
  begin    
    if not _prop_Sensitive then t := AnsiLowerCase(t);
    while not eof(F) and not FStop do
    begin
      Readln(F, str);
      inc(num); // счетчик строк
      if _prop_Sensitive then
        k := Pos(t, str)
      else
        k := Pos(t, AnsilowerCase(str));
      if k = 0 then
        _hi_onEvent(_event_onNotSearch, str)
      else
        _hi_onEvent(_event_onSearch, str);
    end;
  end;
  CloseFile(F);
  _hi_onEvent(_event_onEnd);  
end;