title: Xamarin Forms errors but running fine
body: <p>My new Xamarin Forms compile and runs fine.
  Anyway, the XAML is full of errors (the code is underlined) and IntelliSense doesn't work :</p>
  
  <p><a href="https://i.stack.imgur.com/2Z1Xy.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/2Z1Xy.png" alt="XAML code"></a></p>
  
  <p>I'm running VS 2017. The error says that the property is not found in the type. That's strange because an application with this error typically won't run.</p>
  
  <p>Here is an example of the error (in french)</p>
  
  <p><a href="https://i.stack.imgur.com/H05Hs.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/H05Hs.png" alt="VS error"></a></p>
  
  <p>Any idea on what could happen here ?</p>
  
  <p>Many thanks in advance,
  Julien</p>