title: How can I speed up a web page that has server bound controls with a lot of data
body: <p>I'm working on a page that has several server side dropdown lists, one with 500 items. Based on what's selected, I show/hide other page elements during postback (I only bind the data on initial load). The customer opens this page a lot and I don't want them pulling the 500 items down every time they open it. Currently, it takes about 2 to 5 seconds for the page to render. I've started to migrate to a fully javascript/jquery version of the page but want your opinion because I'm not loving the new version.</p>
  
  <p>Is there a way to make this page faster and limit pulling down all 500 items every time?</p>
  
  <p>Note: Some users will want to enter the dental procedure code directly. Others will need to do a look up.</p>