[Feedback] BindingError (Type Binding not found in xmlns)

Description

Binding Error when it is compiled

(I am using Xamarin 3.4.0 but see the same issue in 3.3.0)

If the <Grid.ColumnDefinitions /> is replaced with

 <Grid.ColumnDefinitions >
 </Grid.ColumnDefinitions>

Then the error goes away!!!!!

How to Reproduce.

1. Create a xamarin app (any environment, I used UWP).
2. Replace MainPage.xaml with the code provided below.
3. Build. (it should fail)
4. Replace the single-line ColumnDefinitions with a double line definition.
5. Build again.

This is what is in my MainPage.xaml.

<?xml version="1.0" encoding="utf-8" >
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:local="clr-namespace:BindingError"
             x:Class="BindingError.MainPage">

    <Grid IsVisible="{Binding}">
        <Grid.ColumnDefinitions />
    </Grid>
</ContentPage>

View on Developer Community To find diagnostic information, see the original linked feedback ticket.

Source

736025