title: Copying HTML Input Element's Content to an ASP.NET TextBox from Code Behind
body: <p>Suppose I have these both in my aspx file:</p>
  
  <pre><code>&lt;asp:TextBox ID="tbASP" runat="server" Width="400px" /&gt;
  &lt;input id="tbHTML"&gt;
  </code></pre>
  
  <p>How to copy the content of <code>tbHTML</code> to <code>tbASP</code> from code behind?</p>