title: Auto suggest with Rendering issue
body: <p>I have an issue in our currently running .net application. we are using autocomplete extender control associated with city textbox for city selection. Due to slow internet connection, when user uses this application with partially rendered, it is not suggesting for entered city (highlighted in red).</p>
  
  <p>I have used Page_Init event for first disable the textbox, than enable it on Page_Load, but it's not working (to prevent user for enter text when the page is not loaded completely).</p>
  
  <p>Is there any solution to overcome this problem?</p>
  
  <p><img src="https://i.stack.imgur.com/fbw2a.jpg" alt="enter image description here"></p>
  
  <p>After loaded successfully,</p>
  
  <p><img src="https://i.stack.imgur.com/kiOuI.jpg" alt="enter image description here"></p>