title: Know When Child Form Closed
body: <p>I've a Form1 with a button. When you click the button, this code block executes:</p>
  
  <pre><code>Form2 frm = new Form2();
  frm.Name = "Form" + musteriNumarasi.ToString();
  frm.Text = "Kullanıcı - " + musteriNumarasi.ToString();
  </code></pre>
  
  <p>Lets say I've clicked three times. There are four forms now: Main, Child1, Child2, Child3. When user closes one of the child forms, main form needs to know which one is closed. How can I do that?</p>