unit1.~pas

是一个最最傻瓜的链接数据库程序

unit Unit1;

interface

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

type
  TfrmRoom = class(TForm)
  
    DataSource1: TDataSource;
    DBGrid1: TDBGrid;
    Query1: TQuery;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    procedure FormCreate(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  frmRoom: TfrmRoom;

implementation

uses Unit2;

{$R *.dfm}

procedure TfrmRoom.FormCreate(Sender: TObject);
begin
  if frmLogin=nil then
    frmLogin:=TfrmLogin.Create(nil);
 //frmRoom.Hide;
  frmLogin.ShowModal;

 Query1.Close;
Query1.SQL.Clear;
Query1.SQL.Add('select * from rooms');
Query1.Open;

end;

procedure TfrmRoom.Button4Click(Sender: TObject);
begin
close;
end;

procedure TfrmRoom.Button1Click(Sender: TObject);
begin

if not Query1.RowsAffected = 0 then
Query1.Post;
Query1.close;
Query1.Open;
end;

procedure TfrmRoom.Button3Click(Sender: TObject);
begin
 if Query1.RecordCount<>0 then
     begin
        if MessageBox(handle, '真的要删除此记录么？','提示', mb_IconQuestion + mb_OkCancel) = idOk then
           begin
              Query1.Delete;
           end;
     end;
end;

end.