frmquerybillform.~pas

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unit frmQueryBillForm;

interface

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

type
  TQueryBillForm = class(TForm)
    Panel1: TPanel;
    Button1: TButton;
    Edit1: TEdit;
    Label1: TLabel;
    Label2: TLabel;
    Panel2: TPanel;
    Query1: TQuery;
    DataSource1: TDataSource;
    Panel3: TPanel;
    Edit2: TEdit;
    Label3: TLabel;
    Button2: TButton;
    Panel4: TPanel;
    Button3: TButton;
    DBGrid1: TDBGrid;
    procedure Button3Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  QueryBillForm: TQueryBillForm;

implementation

{$R *.dfm}

procedure TQueryBillForm.Button3Click(Sender: TObject);
begin
        close;
end;

procedure TQueryBillForm.Button1Click(Sender: TObject);
begin
    if (edit1.Text<>'') then
    begin
        Query1.Close;
        Query1.SQL.Clear;
        Query1.SQL.Add('select * from RoomInfo where 登记员="'+edit1.Text+'"');
        Query1.Open;
    end;
end;

procedure TQueryBillForm.Button2Click(Sender: TObject);
begin
    if (edit2.Text<>'') then
    begin
        Query1.Close;
        Query1.SQL.Clear;
        Query1.SQL.Add('select * from RoomInfo where 房价>'+edit2.Text);
        Query1.Open;
    end;
end;

end.