title: Accessing a Label from a Textbox through AssociatedControlID
body: <p>If I have a label and a textbox and a label</p>
  
  <pre><code>&lt;asp:Label ID="Label1" runat="server" Text="Name" AssociatedControlID="txtName"&gt;&lt;/asp:Label&gt;
  &lt;asp:TextBox ID="txtName" runat="server" CssClass="textbox"&gt;&lt;/asp:TextBox&gt;
  </code></pre>
  
  <p>From code-behind, is it posible to access the controls that list the Textbox as an associated control.</p>