我的学习生涯（Delphi篇） - 09

    前两篇博文我们提了好多的ADO，我们下面来看一下Delphi在ADO方面的强大之处！

    -------------------------------------------------------------------------------------------------美丽分割线---------------------------

   效果如下图：

    此程序使用ADOConnection、ADODataSet、DataSource、DBGrid等控件完成一个简单的数据库（MS Access）操作（添、删、改、查）。

    在使用ADOConnection时，注意把LoginPrompt设置为False！

    单元文件：

    Unit1.pas

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Panel1: TPanel;
    Panel2: TPanel;
    Button3: TButton;
    Button4: TButton;
    DBNavigator1: TDBNavigator;
    Button5: TButton;
    Button6: TButton;
    Button7: TButton;
    Button9: TButton;
    Button8: TButton;
    Button12: TButton;
    Button11: TButton;
    Button10: TButton;
    Button1: TButton;
    Edit1: TEdit;
    Label1: TLabel;
    DataSource1: TDataSource;
    DBGrid1: TDBGrid;
    ADOConnection1: TADOConnection;
    ADODataSet1: TADODataSet;
    procedure Button1Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure Button5Click(Sender: TObject);
    procedure Button6Click(Sender: TObject);
    procedure Button7Click(Sender: TObject);
    procedure Button9Click(Sender: TObject);
    procedure Button8Click(Sender: TObject);
    procedure Button10Click(Sender: TObject);
    procedure Button11Click(Sender: TObject);
    procedure Button12Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
  ADODataSet1.Close;
  if Trim(Edit1.Text) <> '' then
        ADODataSet1.CommandText:='select * from 表1 where 货名='+''''+Edit1.Text+''''
  else
        ADODataSet1.CommandText:='select * from 表1';
  ADODataSet1.Open;
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
  DBNavigator1.BtnClick(nbFirst);
end;

procedure TForm1.Button4Click(Sender: TObject);
begin
  DBNavigator1.BtnClick(nbPrior);
end;

procedure TForm1.Button5Click(Sender: TObject);
begin
  DBNavigator1.BtnClick(nbNext);
end;

procedure TForm1.Button6Click(Sender: TObject);
begin
  DBNavigator1.BtnClick(nbLast);
end;

procedure TForm1.Button7Click(Sender: TObject);
begin
  DBNavigator1.BtnClick(nbInsert);
end;

procedure TForm1.Button9Click(Sender: TObject);
begin
  DBNavigator1.BtnClick(nbDelete);
end;

procedure TForm1.Button8Click(Sender: TObject);
begin
  DBNavigator1.BtnClick(nbEdit);
end;

procedure TForm1.Button10Click(Sender: TObject);
begin
  DBNavigator1.BtnClick(nbPost);
end;

procedure TForm1.Button11Click(Sender: TObject);
begin
  DBNavigator1.BtnClick(nbCancel);
end;

procedure TForm1.Button12Click(Sender: TObject);
begin
  DBNavigator1.BtnClick(nbRefresh);
end;

end.

   ==========如果文件有密码：tdtc_hrb#163.com========把井号替换为at符号即可======