1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:
31:
32:

procedure writeFile(FileName: String);
var
  StrList: TStringList;
begin
  StrList := TStringList.Create;
  try
    StrList.Add('String1');
    StrList.Add('String2');
    StrList.Add('String3');
    StrList.Add('String4');
    StrList.SaveToFile(FileName);
  finally
    FreeAndNil(StrList);
  end;
end;

procedure loadFile(FileName: String);
var
  StrList: TStringList;
  i:       Integer;
begin
  if not FileExists(FileName) then Exit;
  StrList := TStringList.Create;
  try
    StrList.LoadFromFile(FileName);
    if StrList.Count > 0 then
      for i:=0 to StrList.Count - 1 do
        ShowMessage(StrList[i]);
  finally
    FreeAndNil(StrList);
  end;
end;					

1:
2:

Object.Free
Object := nil