roomstate.~pas

完成酒店管理系统

unit RoomState;

interface

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

type
  TRoomStateFrm = class(TForm)
    Label1: TLabel;
    DBGrid1: TDBGrid;
    Button1: TButton;
    Edit1: TEdit;
    Button2: TButton;
    Button3: TButton;
    ADOQuery1: TADOQuery;
    DataSource1: TDataSource;
    Label2: TLabel;
    Edit2: TEdit;
    Button4: TButton;
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  RoomStateFrm: TRoomStateFrm;

implementation

{$R *.dfm}

procedure TRoomStateFrm.Button2Click(Sender: TObject);
begin
if Edit1.Text = '' then
begin
ShowMessage('数据不能为空，请输入信息！');
Edit1.SetFocus;
end
else
begin
ADOQuery1.Close;
ADOQuery1.SQL.Clear;
ADOQuery1.SQL.Add('Select 房间号,旅客类别,客房等级 From Room Where 房间号 = '
  + Edit1.Text);
ADOQuery1.Open;
end;
end;


procedure TRoomStateFrm.Button3Click(Sender: TObject);
begin
Edit1.Text:= '';
Edit1.SetFocus;
ADOQuery1.Close;
ADOQuery1.SQL.Clear;
ADOQuery1.SQL.Add('Select 房间号,旅客类别 From Room ');
ADOQuery1.Open;
end;

procedure TRoomStateFrm.Button1Click(Sender: TObject);
begin
ADOQuery1.Close;
ADOQuery1.SQL.Clear;
ADOQuery1.SQL.Add('Select 房间号,旅客类别 From Room ');
ADOQuery1.Open;
Close;
end;

procedure TRoomStateFrm.Button4Click(Sender: TObject);
begin
if Edit2.Text = '' then
begin
ShowMessage('数据不能为空，请输入信息！');
Edit2.SetFocus;
end
else
begin
ADOQuery1.Close;
ADOQuery1.SQL.Clear;
ADOQuery1.SQL.Add('Select 房间号,旅客类别,客房等级 From Room Where 旅客类别 = "'+Edit2.Text+'"');
ADOQuery1.Open;
end;

end;

end.