Сase для строки

const
  vlist = 'первый, второй, третий';
 
var
  Values: TStringList;
 
procedure SetValues(VL : TStringList; S: String);
var
  I : Integer;
begin
  VL.CommaText := S;
  for I := 0 to CL.Count-1 do
    VL.Objects[I] := Pointer(I);
  VL.Sorted := True;
end;
 
function GetValueIndex(VL : TStringList; Match: String): Integer;
begin
  Result := VL.IndexOf(Match);
  if Result >= 0 then
    Result := Integer(VL.Objects[Result]);
end;
 
procedure TForm1.Button1Click(Sender: TObject);
begin
  case GetValueIndex(Values, Edit1.Text) of
    -1: {не найден} ;
     0: Caption := '0';
     1: Caption := '1';
     2: Caption := '2';
  end;
end;
 
initialization
  VL := TStringList.Create;
  SetValues(VL, vlist);
 
finalization
  VL.Free;
 

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