Do some operations after insert into List
<p>i have following class:</p>

<pre><code>public class FirstClass 
{
   public FirstClass()
   {
       list = new List&lt;SomeType&gt;();
   }

   public List&lt;SomeType&gt; list;
}
</code></pre>

<p>Is this possible to do some actions like fire different method after someone will put element into that list?</p>
