How can I get the values of an ASP Listbox Control which are added in Javascript
<p>I have an asp.net lisbox control and I'm adding the data from the client side javascript with this code;</p>

<pre><code>function selectCompany() {
   var str = document.getElementById('&lt;%= txtFollowing.ClientID %&gt;').value;
   var lbRef = document.getElementById('&lt;%= lbCompanies.ClientID %&gt;');
   var option = document.createElement("option");
   option.text = str;
   option.value = str;
   lbRef.options.add(option);
}
</code></pre>

<p>The items are added with no problem, but in the code behind, when I want to get the values of  items which are in the list box, it is always null, how can I fix this ?</p>
