unit4.~pas

sheji

unit Unit4;

interface

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

type
  TroomForm = class(TForm)
    Button1: TButton;
    Button2: TButton;
    GroupBox1: TGroupBox;
    Label1: TLabel;
    Edit1: TEdit;
    Button3: TButton;
    Button4: TButton;
    DBGrid1: TDBGrid;
    Label2: TLabel;
    DataSource1: TDataSource;
    Table1: TTable;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  roomForm: TroomForm;

implementation

uses Unit1;

{$R *.dfm}

procedure TroomForm.Button1Click(Sender: TObject);
begin
mainForm.Show;
end;

procedure TroomForm.Button2Click(Sender: TObject);
begin
mainForm.Close;
end;

procedure TroomForm.Button3Click(Sender: TObject);
var
fno:string;

begin
fno:=trim(Edit1.Text) ;//输入查询条件
   if length(fno)>0 then
       begin
       table1.First;   //指向数据表的第一条记录
       //如果找到需要的记录，就将游标指向该记录，否则弹出对话框
          if not table1.Locate('客房编号',VarArrayOf([fno]),[loPartialKey]) then
             ShowMessage('没有找到对应房间号的客人的具体信息！') ;
            end;
end;

end.