title: Close Form2 and show Form1
body: <p>i have 2 form. Form1 and Form2. In the form1 is a button, when I click it, then open the form2 and hide form1. </p>
  
  <p>But now, i dont know how to do, if I close Form2 and show form1.</p>
  
  <p>Question number 2:
  If I have in form method Update() for the elements in Form1 (labels, buttons). Can i use this method in form2 ?</p>
  
  <p>Thanks</p>