unit1.pas

sql server 2005书中11到16章的全部代码

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    ADOTable1: TADOTable;
    DataSource1: TDataSource;
    DBGrid1: TDBGrid;
    Label1: TLabel;
    Label2: TLabel;
    ComboBox1: TComboBox;
    Label3: TLabel;
    ComboBox2: TComboBox;
    Label4: TLabel;
    Edit1: TEdit;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    procedure FormCreate(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure ADOTable1FilterRecord(DataSet: TDataSet;
      var Accept: Boolean);
    procedure Button4Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
var i: integer ;
begin
  for i:=0 to adotable1.Fields.Count -1 do
  begin
  combobox1.Items.Add(adotable1.Fields[i].FieldName);
  end ;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
adotable1.Filtered :=true ;
end;

procedure TForm1.ADOTable1FilterRecord(DataSet: TDataSet;
var Accept: Boolean);
begin
if combobox2.Text='=' then
accept:=adotable1[combobox1.Text]=edit1.Text ;
 if combobox2.Text='>' then
accept:=adotable1[combobox1.Text]>edit1.Text ;
if combobox2.Text='<' then
accept:=adotable1[combobox1.Text]<edit1.Text ;
if combobox2.Text='>=' then
accept:=adotable1[combobox1.Text]>=edit1.Text ;
if combobox2.Text='<=' then
accept:=adotable1[combobox1.Text]<=edit1.Text ;
if combobox2.Text='<>' then
accept:=adotable1[combobox1.Text]<>edit1.Text ;
end;

procedure TForm1.Button4Click(Sender: TObject);
begin
adotable1.Filtered:=false ;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
adotable1.Prior ;
if adotable1.Bof then
showmessage('移过第一条记录了') ;
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
adotable1.Next ;
if adotable1.Eof then
showmessage('移过最后一条记录了') ;
end;


end.