unit Unit4;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, Grids, DBGrids, StdCtrls, ExtCtrls, DBCtrls, DB, ADODB, Mask;

type
  TForm4 = class(TForm)
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    Label5: TLabel;
    Button1: TButton;
    Button2: TButton;
    DBGrid1: TDBGrid;
    DBEdit1: TDBEdit;
    DBEdit2: TDBEdit;
    DBEdit3: TDBEdit;
    DBEdit4: TDBEdit;
    DBEdit5: TDBEdit;
    DataSource1: TDataSource;
    ADOQuery1: TADOQuery;
    DBNavigator1: TDBNavigator;
    Button3: TButton;
    Button4: TButton;
    procedure Button3Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure DataSource1StateChange(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form4: TForm4;

implementation

{$R *.dfm}

procedure TForm4.Button3Click(Sender: TObject);
begin
close
end;

procedure TForm4.Button1Click(Sender: TObject);
begin
adoquery1.Insert;
dbedit1.SetFocus;
end;
 procedure TForm4.Button4Click(Sender: TObject);
begin
adoquery1.post;

end;
procedure TForm4.Button2Click(Sender: TObject);
begin

if messagebox(0,'確認要刪除？','信息提示！',mb_yesno+mb_iconinformation+mb_taskmodal)=idyes then
adoquery1.Delete;
end;

procedure TForm4.DataSource1StateChange(Sender: TObject);
begin
if adoquery1.State=dsbrowse then
begin
button4.Enabled:=false;
end;
if (adoquery1.State=dsedit) or (adoquery1.State=dsinsert) then
button4.Enabled:=true;
end;

end.