title: Remove underline from Entry Control in Xamarin Forms
body: <p>I am new to Xamarin-Forms and developing a login form and using Material Design (<code>IVisual</code>). I have created a custom Entry class and inherited it with <code>MaterialEntryRenderer</code> to customize it.
  Thing i want to achieve is to remove underline <code>Entry</code> have. I have see alot of examples but all of them use <code>EntryRenderer</code> instead. </p>
  
  <pre><code>public class CustomEntryRenderer : MaterialEntryRenderer
  {
      public CustomEntryRenderer(Context context) : base(context) { }
  
      protected override void OnElementChanged(ElementChangedEventArgs&lt;Entry&gt; e)
      {
          base.OnElementChanged(e);
  
          if (Control != null)
          {
             Control.Background = null;
             Control.SetBackgroundColor(Android.Graphics.Color.Transparent);
          }
      }
  }
  </code></pre>
  
  <p>it work fine with <code>EntryRenderer</code> but not for <code>MaterialEntryRenderer</code>.</p>