title: How to call a method comming from a UserControl and trigger the method in a Form which is a child form??
body: <p>Senario:</p>
  
  <p><code>SwitcherForm</code> is the Main Form</p>
  
  <p><code>frmCategory</code> a Child Form</p>
  
  <p><code>ItemView</code> is a UserControl</p>
  
  <p>What i'm trying to do is I want trigger or execute the method <code>refreshComboBox()</code> in the form <code>frmCategory</code> from the UserControl <code>ItemView</code>.</p>
  
  <p>The UserControl <code>ItemView</code> contains the method <code>refreshComboBox()</code>.</p>
  
  <pre><code>public void refreshComboBox()
      {
          //some codes here
      }
  </code></pre>
  
  <p>And this is how I execute <code>refreshComboBox()</code> in <code>frmCategory</code>.</p>
  
  <pre><code>private void btnOk_Click(object sender, EventArgs e)
      {
          itemView.refreshComboBox();
      }
  </code></pre>
  
  <p>But it didn't work, the method did not excecute. Please help. Thanks.</p>