dinnermenudel.~pas

完成酒店管理系统

unit DinnerMenuDel;

interface

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

type
  TDinnerMenuDelFrm = class(TForm)
    GroupBox1: TGroupBox;
    Label1: TLabel;
    Edit1: TEdit;
    Button1: TButton;
    GroupBox2: TGroupBox;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    Label5: TLabel;
    Label6: TLabel;
    Edit2: TEdit;
    Edit3: TEdit;
    Edit5: TEdit;
    Edit6: TEdit;
    Button2: TButton;
    Button3: TButton;
    Edit4: TEdit;
    ADOQuery1: TADOQuery;
    Button4: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  DinnerMenuDelFrm: TDinnerMenuDelFrm;

implementation

{$R *.dfm}

procedure TDinnerMenuDelFrm.Button1Click(Sender: TObject);
var
loc: Boolean;
begin
if Edit1.Text = '' then
begin
ShowMessage('数据不能为空，请输入！');
Edit1.SetFocus;
end
else
begin
loc:=ADOQuery1.Locate('编号',Edit1.Text,[loCaseInsensitive]);
if loc = True then
begin
Edit2.Text:= ADOQuery1.FieldValues['种类'];
Edit3.Text:= ADOQuery1.FieldValues['名称'];
Edit4.Text:= ADOQuery1.FieldValues['风味'];
Edit5.Text:=IntToStr(ADOQuery1.FieldValues['单价']);
Edit6.Text:=ADOQuery1.FieldValues['备注'];
end
else
begin
ShowMessage('此编号不存在,请重新输入!');
Edit1.Text:= '';
Edit1.SetFocus;
end;





end;
end;
procedure TDinnerMenuDelFrm.Button3Click(Sender: TObject);
begin
Close;
end;

procedure TDinnerMenuDelFrm.Button2Click(Sender: TObject);
begin
ADOQuery1.Locate('编号',Edit1.Text,[loCaseInsensitive]);
ADOQuery1.Delete;
ShowMessage('已成功删除信息!');
end;

end.