title: Dynamically set an asp.net TextBox tooltip
body: <p>I have an asp.net textbox:  </p>
  
  <pre><code>    &lt;asp:TextBox runat="server" id="tb" ToolTip="A" /&gt;.
  </code></pre>
  
  <p>That I need to be able to set the tooltip based on a value selected from a dropdown list.  </p>
  
  <pre><code>    If (var == "something") {  
          ToolTip = "B";  
      } else {  
          ToolTip = "A";  
      }
  </code></pre>
  
  <p>I'm setting the ToolTip to an inital value based on what the DropDown defaults to.  When it changes I need to set the ToolTip.</p>
  
  <p>I have seen and tried several solutions from the web, but have been unable to make them work.</p>
  
  <p>I'm using and VS 2008 and IE7, the site is running using the VS server and not IIs.  I have verified that I have the correct field and CAN change the 'title' using the debugger.</p>
  
  <p>Thank You in advance</p>