title: Unable to change the enabled property of a winform button
body: <p>I have made this winform static so that only one instance should be maintained throughout (requirement) . In the form load event I have set the enabled property of few button controls to  false. Later I am unable to set it back to true. Whereas I am able to change all the other properties like visible, text etc.. </p>
  
  <pre><code> var myCancelList= controlFilter.FilterControls(this,c =&gt; c.Name != null &amp;&amp;       c.Name.StartsWith("btnCancel"));
  foreach (Control c in myCancelList)
  {
     c.Enabled = false;       
  }
  </code></pre>
  
  <p>Help appreciated.
  Thanks in advance</p>