title: Creating a message box, if Dropdown answer is yes. VB.Net
body: <p>I have a working dropdown box that gives the answers yes &amp; no.  When "yes" is selected I need to create a message box that displays a simple message and allows the user to click ok, to get back to the survey.</p>
  
  <p>I have been working with it, and tried several things but no luck.  What would the code look like, and where exactly would I place it to fire at the right time.  I am working in VB, with an aspx &amp; aspx.vb page.  Thanks in advance.</p>