怎么获取dbgrideh选中列的值

//列出DBGridEH被选中的值
procedure TForm1.N4Click(Sender: TObject);
 Var
    I:Integer;
begin
   for I := 0 to DBGridEh4.SelectedRows.Count-1 do
      begin
        DBGridEh4.DataSource.DataSet.GotoBookmark(pointer(DBGridEh4.SelectedRows.Items[i]));
        Memo1.Lines.Add(DBGridEh4.Fields[1].AsString);
      End;
end; 


扩展：
选中多行判断值，先做一个判断
首先要打开 dbgrideh属性 中的多重选择 options->dgmultiselect
 
procedure TForm3.N5Click(Sender: TObject);
var
 i: Integer;
begin
 if DBGridEh1.SelectedRows.Count>0 then
   with DBGridEh1.DataSource.DataSet do
     for i:=0 to DBGridEh1.SelectedRows.Count-1 do
     begin
       GotoBookmark(pointer(DBGridEh1.SelectedRows.Items[i]));
       Listbox1.Items.Add(Fields[0].AsString);
     end;
 
end;