hbxxunit.pas

很好的delphi程序源码

unit HBXXUnit;

interface

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

type
  TForm6 = class(TForm)
    ADODataSet1: TADODataSet;
    DataSource1: TDataSource;
    DBGrid1: TDBGrid;
    Label1: TLabel;
    Label2: TLabel;
    Edit1: TEdit;
    Button1: TButton;
    Button2: TButton;
    ComboBoxEx1: TComboBoxEx;
    SpeedButton1: TSpeedButton;
    ADOQuery1: TADOQuery;
    DBGrid2: TDBGrid;
    DataSource2: TDataSource;
    GroupBox1: TGroupBox;
    Label3: TLabel;
    Label4: TLabel;
    Label5: TLabel;
    Label6: TLabel;
    procedure Button1Click(Sender: TObject);
    procedure SpeedButton1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form6: TForm6;

implementation

uses sqlUnit;

{$R *.dfm}

procedure TForm6.Button1Click(Sender: TObject);
begin
  close;
end;

procedure TForm6.SpeedButton1Click(Sender: TObject);
begin
   form8.show;
end;

procedure TForm6.Button2Click(Sender: TObject);
var
str:string;
begin
//ADOQuery1.Refresh;
if ComboBoxEx1.Text='' then
 begin
  showmessage('请选择查询目标！');
  ComboBoxEx1.SetFocus;
 end
else
  begin
    if edit1.Text='' then
      begin
        showmessage(' 请输入查询条件！');
        edit1.SetFocus;
      end
    else
      begin
         ADOQuery1.Close;
         str:='select *';
         str:=str+' from 航班信息'+' where '+ComboBoxEx1.Text+'='+'"'+trim(edit1.Text)+'"';
         ADOQuery1.SQL.Clear;
         ADOQuery1.SQL.Add(str);
         try
         ADOQuery1.Open;
         finally
         ADOQuery1.ExecSQL;
         end;
         if ADOQuery1.RecordCount=0 then
          begin
           showmessage('无此记录，请确认！');
          end;
          label4.Caption:=inttostr(adoquery1.RecNo);
          label6.Caption:=inttostr(adoquery1.RecordCount);
      end;
    end;
end;
end.