title: How can I limit the height of a grid in Xamarin?
body: <p>I have in XAML:</p>
  
  <pre><code>        &lt;Grid.RowDefinitions&gt;
              &lt;RowDefinition Height="8*" /&gt;
              &lt;RowDefinition Height="83*" /&gt;
              &lt;RowDefinition Height="8*" /&gt;
              &lt;RowDefinition Height="1*" /&gt;
          &lt;/Grid.RowDefinitions&gt;
  
          &lt;Grid Grid.Row="3" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand" BackgroundColor="#EEEEEE" RowSpacing="0" Padding="0"&gt;
              &lt;Grid x:Name="a"&gt;
                  &lt;local:TimerView x:Name="timerView1" VerticalOptions="FillAndExpand"&gt;
                      &lt;local:TimerView.ProgressBar&gt;
                          &lt;Frame HasShadow="false" Padding="0" Margin="0" BackgroundColor="#AAAAAA" CornerRadius="0" VerticalOptions="FillAndExpand" /&gt;
                      &lt;/local:TimerView.ProgressBar&gt;
                      &lt;local:TimerView.TrackBar&gt;
                          &lt;Frame HasShadow="false" Padding="0" Margin="0" CornerRadius="0" BackgroundColor="#EEEEEE" VerticalOptions="FillAndExpand" /&gt;
                      &lt;/local:TimerView.TrackBar&gt;
                  &lt;/local:TimerView&gt;
              &lt;/Grid&gt;
          &lt;/Grid&gt;
  </code></pre>
  
  <p>I would like the height of the Grid.Row="3" to be very small, perhaps 2-3 px.  Is there a way I can limit the height to this small amount?</p>