Delphi VCL

Development Platform:

Delphi

Unit1.pas：Code Content

							unit Unit1;
interface
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ExtCtrls, DBCtrls, Grids, DBGrids, DB, DBTables,  StdCtrls,
  ADODB, Mask;
type
  TForm1 = class(TForm)
    Label1: TLabel;
    DataSource1: TDataSource;
    ADOConnection1: TADOConnection;
    DBGrid1: TDBGrid;
    DBNavigator1: TDBNavigator;
    ADOQuery1: TADOQuery;
    DBEdit1: TDBEdit;
    DBEdit2: TDBEdit;
    DBEdit3: TDBEdit;
    Button1: TButton;
    Button2: TButton;
    Edit1: TEdit;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Edit1Change(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
var
  Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
begin
    ADOQuery1.active:=true;
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
      ADOQuery1.active:=false;
end;
procedure TForm1.Edit1Change(Sender: TObject);
begin
    if edit1.Text<>'xiaobai' then
     DBNavigator1.VisibleButtons:=[nbFirst,nbPrior,nbNext,nblast]
     else  DBNavigator1.VisibleButtons:=[nbFirst,nbPrior,nbNext,nbLast,nbInsert,nbDelete,nbEdit,nbPost,nbCancel,nbRefresh]
end;
end.

						