unit Unit2;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm2 = class(TForm)
    Label1: TLabel;
    Edit1: TEdit;
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form2: TForm2;

implementation
uses unit1;
{$R *.dfm}

procedure TForm2.Button1Click(Sender: TObject);
begin
  form1.ComboBox1.Text:=form2.Edit1.Text;
  form2.Close;
  form1.BitBtn1.Click; 
end;

procedure TForm2.Button2Click(Sender: TObject);
begin
  close;
end;

end.