unit7.pas

用delphi开发的户籍管理系统

unit Unit7;

interface

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

type
  TForm7 = class(TForm)
    Label1: TLabel;
    Label2: TLabel;
    Memo1: TMemo;
    BitBtn1: TBitBtn;
    BitBtn2: TBitBtn;
    DataSource1: TDataSource;
    Query1: TQuery;
    Button1: TButton;
    Button2: TButton;
    DBGrid1: TDBGrid;
    procedure Button2Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure BitBtn1Click(Sender: TObject);
    procedure BitBtn2Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form7: TForm7;

implementation

{$R *.dfm}

//清空已查记录
procedure TForm7.Button2Click(Sender: TObject);
begin
   Dbgrid1.Visible:=false;
end;

//退出
procedure TForm7.Button1Click(Sender: TObject);
begin
  memo1.Clear;
  form7.Close;
end;

//查询
procedure TForm7.BitBtn1Click(Sender: TObject);
begin
  query1.Close;
  query1.SQL.Clear;
  query1.SQL.Add(form7.Memo1.Text);
  query1.Open;
end;

//取消查询
procedure TForm7.BitBtn2Click(Sender: TObject);
begin
  query1.Close;
  query1.SQL.Clear;
  memo1.Clear;
end;

procedure TForm7.FormCreate(Sender: TObject);
begin
  query1.Filter:='照片';
  query1.Filtered:=true;
end;

end.