title: Xamarin Forms pass model value to binding converter parameter
body: <p>I want to pass model property value like a converter parameter for other binding value.</p>
  
  <pre><code>&lt;Label FontSize="{Binding MediumLabelTextSize}"
         Text="{Binding FeedHome.QuestionBody,
                Converter={StaticResource HideLongTextConverter}}"/&gt;
  &lt;Label FontSize="{Binding SmallLabelTextSize}"
          IsVisible="{Binding IsQuestionReadMoreVisible}"
          Text="Read more"&gt;
          &lt;Label.GestureRecognizers&gt;
              &lt;TapGestureRecognizer Command="{Binding ReadMoreCommand}"
                              CommandParameter="{Binding .}"/&gt;
          &lt;/Label.GestureRecognizers&gt;
  &lt;/Label&gt;
  </code></pre>
  
  <p>I want to pass  FeedHome.QuestionBody like a converter parameter for IsQuestionReadMoreVisible.
  How can I do it?</p>