如何把Tdbgrid选择的行中的具体某个格中的数据，表示出来？

Question

procedure TForm1.BitBtn1Click(Sender: TObject);
var
  i, j: Integer;
  s: string;
begin
  if DBGrid1.SelectedRows.Count>0 then
    with DBGrid1.DataSource.DataSet do
      for i:=0 to DBGrid1.SelectedRows.Count-1 do
      begin
        GotoBook(pointer(DBGrid1.SelectedRows.Items[i]));
        for j := 0 to FieldCount-1 do
        begin          if (j>0) then s:=s+', ';
          s:=s+Fields[j].AsString;
        end;
        Listbox1.Items.Add(s);
        s:= '';
      end;
end;自已改装一下上面的程序就可了~~~

Answer 1

showmessage(DBGrid1.DataSource.DataSet.fieldbyname(
dbgrid1.Columns[DBGrid1.SelectedIndex].FieldName).asstring);

Answer 2

procedure TForm1.BitBtn1Click(Sender: TObject);
var
  s:string;
begin
  s:=dbgrid1.SelectedField.AsString;
end;

Answer 3

procedure TForm1.dbgridkeypress(Sender: TObject);
var
  s:string;
begin
  s:=dbgrid1.SelectedField.AsString;
end;