title: How can I use AutoPostBack inside UpdatePanel
body: <p>I have two DropDownLists inside an UpdatePanel.</p>
  
  <p>The values shown inside the second are dependent of the selectedValue on the first, so, I need AutoPostBack=true.</p>
  
  <p>But, whenever the selected value in the first DropDownList is changed causes the UpdatePanel reload.</p>
  
  <p>How can this be solved?</p>
  
  <p>PS.: The UpdatePanel's UpdateMode property is set to Conditional.</p>
  
  <p>Thanks.</p>