zongfeicx.~pas

这是一个小区物业管理系统

unit zongfeicx;

interface

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

type
  Tfrmzongfei = class(TForm)
    Panel1: TPanel;
    Panel2: TPanel;
    Bevel1: TBevel;
    Bevel2: TBevel;
    Bevel3: TBevel;
    Bevel4: TBevel;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    CBField: TComboBox;
    cbcondition: TComboBox;
    edtvalue: TEdit;
    BitBtn1: TBitBtn;
    BitBtn2: TBitBtn;
    BitBtn8: TBitBtn;
    Label4: TLabel;
    Bevel5: TBevel;
    DBGrid1: TDBGrid;
    DataSource1: TDataSource;
    ADOConnection1: TADOConnection;
    ADOQuery1: TADOQuery;
    procedure BitBtn1Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure BitBtn2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  frmzongfei: Tfrmzongfei;

implementation

{$R *.dfm}

procedure Tfrmzongfei.BitBtn1Click(Sender: TObject);
var
 str:string;
begin
if edtvalue.Text<>'' then
begin
 ADOQuery1.Close;
 ADOQuery1.SQL.Clear;
 if cbcondition.Text='=' then
    str:='select * from wyglfei where '+cbfield.Text+cbcondition.Text+ edtvalue.Text
 else
    str:='select * from wyglfei where '+cbfield.Text+' '+cbcondition.Text+' '+''''+trim(edtvalue.Text)+'%'+'''';
 ADOQuery1.SQL.Add(str);
 ADOQuery1.Prepared;
 ADOQuery1.Open;
 end
else
 showmessage('请输入查询值！');
end;

procedure Tfrmzongfei.FormCreate(Sender: TObject);
begin
edtvalue.Clear;
end;

procedure Tfrmzongfei.BitBtn2Click(Sender: TObject);
begin
ADOQuery1.Close;
ADOQuery1.SQL.Clear;
ADOQuery1.SQL.Add('select *from wyglfei');
ADOQuery1.Prepared;
ADOQuery1.Open;
end;

end.