title: Object reference not set to an instance of an object execep occur while add the value for list in MVC2
body: <p>Object reference not set to an instance of an object Exception thrown..(Null referenceException was  unhandled by user code)</p>
  
  <p>Model:</p>
  
  <pre><code>public class AboutMod
  {
      private List&lt;int&gt; divWidthList = new List&lt;int&gt;();
      public List&lt;int&gt; DivWidthList { get; set; }
  }
  </code></pre>
  
  <p>Control page:</p>
  
  <pre><code> public ActionResult About()
          {
              AboutMod Obj = new AboutMod();//model class name 
              for (int i = 20; i &lt;= 100; i += 20)
              {
                  Obj.DivWidthList.Add(10);//Run time Exception occurs here 
              }
                  return View();
          }
  </code></pre>