C# Converting ListBox to String then Aggregate
<p>I have a listbox being populated from a combo box.  What i need to do is string all the contents of the listbox together and then Aggregate it.</p>

<pre><code>string cols = listbox1.items.Aggregate((f, s) =&gt; f.value + "," + s.value);
</code></pre>

<p>doesnt work.</p>
