unit extension;

interface

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

type
  TfrmExtension = class(TForm)
    DBGrid1: TDBGrid;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    Button5: TButton;
    DataSource1: TDataSource;
    Table1: TTable;
    Panel1: TPanel;
    Label1: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    DBEdit1: TDBEdit;
    DBEdit2: TDBEdit;
    DBEdit4: TDBEdit;
    Button6: TButton;
    DBCheckBox1: TDBCheckBox;
    procedure FormCreate(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure Button6Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  frmExtension: TfrmExtension;

implementation

{$R *.dfm}

procedure TfrmExtension.FormCreate(Sender: TObject);
begin
   table1.Open;
end;

procedure TfrmExtension.Button1Click(Sender: TObject);
begin
   if table1.State=dsEdit then
   begin
      table1.Edit;
      dbEdit1.SetFocus;
      dbEdit1.SelectAll;
   end;
end;
procedure TfrmExtension.FormClose(Sender: TObject;
  var Action: TCloseAction);
begin
   table1.Close;
end;

procedure TfrmExtension.Button2Click(Sender: TObject);
begin
   table1.Insert;
   dbEdit1.SetFocus;
end;

procedure TfrmExtension.Button3Click(Sender: TObject);
begin
   if(Application.MessageBox('確定要刪除這條記錄嗎？','確認刪除',
   Mb_YESNO+Mb_ICONQUESTION)<>IDNO) then
      if table1.RecordCount>0 then
         table1.Delete; 
end;
procedure TfrmExtension.Button4Click(Sender: TObject);
begin
   if table1.Modified then
      table1.Post;
end;


procedure TfrmExtension.Button6Click(Sender: TObject);
begin
   if table1.Modified then
      table1.Cancel;
end;

end.