unit3.~pas

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unit Unit3;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ComCtrls, StdCtrls, DBCtrls, Mask, Grids, DBGrids;

type
  TForm3 = class(TForm)
    GroupBox3: TGroupBox;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    Label5: TLabel;
    Label6: TLabel;
    Label7: TLabel;
    Label8: TLabel;
    Button1: TButton;
    GroupBox1: TGroupBox;
    StatusBar1: TStatusBar;
    DBGrid1: TDBGrid;
    Edit1: TEdit;
    Edit2: TEdit;
    Edit3: TEdit;
    Edit4: TEdit;
    Edit5: TEdit;
    Edit6: TEdit;
    ComboBox1: TComboBox;
    ComboBox2: TComboBox;
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure FormCreate(Sender: TObject);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form3: TForm3;

implementation
uses Unit1;
{$R *.dfm}

procedure TForm3.FormClose(Sender: TObject; var Action: TCloseAction);
begin
action:=cafree;
end;

procedure TForm3.FormCreate(Sender: TObject);
begin
try
    dm.ADOConnection1.Open;
    except
        application.Terminate;
    end;
end;

procedure TForm3.Button1Click(Sender: TObject);
var
  sqlstr:string;
begin
  sqlstr:='select * from dangan where (1+1)';
  if edit1.Text<>''then
      sqlstr:=sqlstr+'and (姓名='''+edit1.Text+''')';
  if edit2.Text<>''then
      sqlstr:=sqlstr+'and (学号='''+edit2.Text+''')';
  if combobox1.Text<>''then
      sqlstr:=sqlstr+'and (性别='''+combobox1.Text+''')';
  if combobox2.Text<>''then
      sqlstr:=sqlstr+'and (党团员='''+combobox2.Text+''')';
  if edit3.Text<>''then
      sqlstr:=sqlstr+'and (院系='''+edit3.Text+''')';
  if edit4.Text<>''then
      sqlstr:=sqlstr+'and (籍贯='''+edit4.Text+''')';
  if edit5.Text<>''then
      sqlstr:=sqlstr+'and (专业='''+edit5.Text+''')';
  if edit6.Text<>''then
      sqlstr:=sqlstr+'and (电话号码='''+edit6.Text+''')';
  dm.ADOQuery1.Close;
  dm.ADOQuery1.SQL.Clear;
  dm.ADOQuery1.SQL.Add(sqlstr);
  dm.ADOQuery1.Open;
  edit1.Text:='';
  edit2.Text:='';
  edit3.Text:='';
  edit4.Text:='';
  edit5.Text:='';
  edit6.Text:='';
  combobox1.Text:='';
  combobox2.Text:='';
  statusbar1.Panels[0].Text:='总共找到'+inttostr(dm.ADOQuery1.RecordCount)+'条记录';
  
end;

end.