xzlzlchx.pas

来自「Delphi实战演练一书的配套光盘」· PAS 代码 · 共 68 行

unit XzlzlChx;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  Db, DBTables, StdCtrls, Buttons, ExtCtrls, DBCtrls, Grids, DBGrids;

type
  TXzlZlChxFrm = class(TForm)
    DBGrid1: TDBGrid;
    GroupBox1: TGroupBox;
    DBImage1: TDBImage;
    DBNavigator1: TDBNavigator;
    BitBtn1: TBitBtn;
    DataSource1: TDataSource;
    Label1: TLabel;
    Edit1: TEdit;
    Label2: TLabel;
    ComboBox1: TComboBox;
    Label3: TLabel;
    ComboBox2: TComboBox;
    Label4: TLabel;
    Edit2: TEdit;
    BitBtn2: TBitBtn;
    GroupBox2: TGroupBox;
    DBMemo1: TDBMemo;
    Query1: TQuery;
    procedure BitBtn1Click(Sender: TObject);
    procedure BitBtn2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  XzlZlChxFrm: TXzlZlChxFrm;

implementation

{$R *.DFM}

procedure TXzlZlChxFrm.BitBtn1Click(Sender: TObject);
begin
  Close;
end;

procedure TXzlZlChxFrm.BitBtn2Click(Sender: TObject);
begin
  Query1.Close;
  Query1.SQL.Clear;
  Query1.SQL.Add('Select * from XzlZ');
  Query1.SQL.Add('Where 名称<>''''');
  if Edit1.Text<>'' then
    Query1.SQL.Add('And 名称='''+Edit1.Text+'''');
  if ComboBox1.Text<>'' then
    Query1.SQL.Add('And 区域='''+ComboBox1.Text+'''');
  if ComboBox2.Text<>'' then
    Query1.SQL.Add('And 房间类型='''+ComboBox2.Text+'''');
  if Edit2.Text<>'' then
    Query1.SQL.Add('And 租金='+Edit2.Text);
  Query1.Open;

end;

end.