How to refresh windows form using another form without closing in C#

How to refresh windows form using another form without closing in C#

 In fIrst form

                    Form edit = new secondform();
                    secondform.FormClosing += new                 FormClosingEventHandler(this.closing_second_form);

                    edit.Show(); 

  private void closing_second_form(object sender, FormClosingEventArgs e)
        {
            //hear you code for refresh

        } 

 In second form

this.close();