unit11.pas

西门子与计算机通讯程序包括源代码 程序说明 可以进行时时数据采集记录

unit Unit11;

interface

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

type
  TForm11 = class(TForm)
    Panel1: TPanel;
    Panel2: TPanel;
    DBNavigator1: TDBNavigator;
    Button2: TButton;
    ADOConnection1: TADOConnection;
    ADOTable1: TADOTable;
    DataSource1: TDataSource;
    DBGrid1: TDBGrid;
    Button1: TButton;
    procedure Button2Click(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure DataSource1DataChange(Sender: TObject; Field: TField);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form11: TForm11;

implementation

uses main, adodata;

{$R *.dfm}

procedure TForm11.Button2Click(Sender: TObject);
begin
form11.Close;
end;

procedure TForm11.FormDestroy(Sender: TObject);
begin
  if ADOConnection1.Connected then
  begin
    adotable1.Active:=false;
    ADOConnection1.Close;

  end;
end;

procedure TForm11.FormClose(Sender: TObject; var Action: TCloseAction);
begin
 if ADOConnection1.Connected then
  begin
    adotable1.Active:=false;
    ADOConnection1.Close;

  end;
end;

procedure TForm11.DataSource1DataChange(Sender: TObject; Field: TField);
begin
ADOTable1.UpdateCursorPos;
end;

procedure TForm11.Button1Click(Sender: TObject);
begin
ADOTable1.Active:=false;
ADOTable1.Active:=true;
ADOTable1.Last;
end;

end.