excel的老问题？

Question

记住：
  ExcepApplication.WorkBooks是对象数组,你的语句应该是：excelapplication1.WorkBooks[1].Open(OpenDialog1.FileName今天我心情好，才给你回答这个问题！！！！！

Answer 1

procedure TForm1.Button1Click(Sender: TObject);
begin
          ExcelApplication1.Connect;
        
        OpenDialog1.Filter:='*.XLS¦*.XLS';
        OpenDialog1.DefaultExt:='XLS';
        if OpenDialog1.Execute then
        begin
                ExcelApplication1.WorkBooks[1].Open(OpenDialog1.FileName);
                ExcelApplication1.Visible:=true;
        end;end.
错误信息：
[Error] Unit1.pas(43): Undeclared identifier: 'Open'
[Error] Unit1.pas(44): '[' expected but ':=' found
[Error] Unit1.pas(47): ';' expected but '.' found
[Error] Unit1.pas(49): Declaration expected but end of file found
[Fatal Error] Project1.dpr(5): Could not compile used unit 'Unit1.pas'