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　　　　修改数据时选中DBGrid中的一行，按下修改控件，在弹出的修改窗体中显示要修改的信息，不能显示所选的，显示的是其他信息．   unit Unit4;interfaceuses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, Grids, DBGrids,unit11, ComCtrls,unit12, DB, ADODB,unit14;type
  TForm4 = class(TForm)
    GroupBox1: TGroupBox;
    Label2: TLabel;
    Label5: TLabel;
    Label6: TLabel;
    Label8: TLabel;
    Label17: TLabel;
    Edit1: TEdit;
    Edit2: TEdit;
    Edit7: TEdit;
    Label3: TLabel;
    Edit4: TEdit;
    Label1: TLabel;
    Edit6: TEdit;
    Label7: TLabel;
    Edit5: TEdit;
    DBGrid1: TDBGrid;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    DateTimePicker1: TDateTimePicker;
    Edit8: TEdit;
    DataSource1: TDataSource;
    ADOQuery1: TADOQuery;
    ADOCommand1: TADOCommand;
    Button5: TButton;
    procedure Button4Click(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure Button3Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure FormActivate(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button5Click(Sender: TObject);
    procedure DBGrid1CellClick(Column: TColumn);
  private
    { Private declarations }
       procedure VisibleChanging; override;//
  public
    { Public declarations }
  end;var
  Form4: TForm4;
  tName:TEdit;implementation
  procedure TForm4.VisibleChanging;
begin
end;
{$R *.dfm}
procedure TForm4.Button4Click(Sender: TObject);
begin
form11.setEdit(edit1,edit2,edit4,edit5,edit6,edit7,edit8,datetimepicker1);
form11.WindowState:=wsNormal;
form11.Visible:=true;
end;procedure TForm4.FormClose(Sender: TObject; var Action: TCloseAction);
begin
visible:=false;
end;procedure TForm4.Button3Click(Sender: TObject);
begin
visible:=false;
end;procedure TForm4.Button1Click(Sender: TObject);
begin
if edit8.Text<>'init' then
begin
form12.setID(edit8.Text);
form12.Visible:=true;
end;
end;procedure TForm4.FormActivate(Sender: TObject);
begin
   if edit8.Text<>'init' then
   begin
   adoquery1.Active:=false;
   adoquery1.Close;
   adoquery1.SQL.Text:='select ID,开始日期,结束日期,说明 from study_info where pid='+edit8.Text;
   adoquery1.Open;
   adoquery1.active:=true;
   end;
end;procedure TForm4.Button2Click(Sender: TObject);
begin
if not adoquery1.Eof then
begin
adocommand1.CommandText:='delete from study_info where ID='+adoquery1.FieldByName('ID').AsString;
adocommand1.Execute;
//adoquery1.SQL.Clear;
//adoquery1.SQL.Add('delete from study_info where ID='+adoquery1.FieldByName('ID').AsString);
//adoquery1.ExecSQL;
adoquery1.active:=false;
 adoquery1.Close;
 adoquery1.Open;
adoquery1.active:=true;
end;
end;procedure TForm4.Button5Click(Sender: TObject);
begin
{if not adoquery1.Eof then
begin
 if edit8.Text<>'init' then
begin
 form14.setID(adoquery1.FieldByName('ID').Value);
 form14.Visible:=true;
 end;
end;  }
form14.ADOTable1.Active:=false ;
form14.ADOTable1.Active:=true;
 form14.Visible:=true;
end;
procedure TForm4.DBGrid1CellClick(Column: TColumn);
begin
// if not adoquery1.Eof then
//begin
 if edit8.Text<>'init' then
begin
 form14.setID(adoquery1.FieldByName('ID').Value); end;
//end;
end;end.－－－－－－－－－－－－－－－－
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