title: Populate Dropdown list based on another dropdown list
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/5686735/populate-one-dropdown-based-on-selection-in-another">Populate one dropdown based on selection in another</a>  </p>
  </blockquote>
  
  
  
  <p>I have 3 Dropdown list on my aspx page. First one is hard coded with 4 values. The second one should be populated programatically, for ex. if I select "Product1" in first dropdown, then second dropdown should be populated with values like "Model1_1", "Model1_2". If I select "Product2" then the second dropdown is populated with "Model2_1", "Model2_2").</p>
  
  <p>Could you give me some help ?</p>