Why is SelectedItem not working in ListView for UWP app?

Question

WPF

There is the following view:

<Page
    x:Class="App1.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:App1"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d" d:DataContext="{d:DesignInstance local:RootViewModel}">

    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="*"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <TextBlock Text="{Binding Selected}" TextAlignment="Center"/>
        <GridView  Grid.Row="1"
                  SelectionMode="Single"
                  HorizontalAlignment="Center"
                  ItemsSource="{Binding Items}" 
                  SelectedItem="{Binding  Selected}" />
    </Grid>
</Page>

There is the following view model:

public class RootViewModel : INotifyPropertyChanged
    {

        public IEnumerable<string> Items
        {
            get;
        } = new[] { "1", "2", "3", };

        string selected;

        public string Selected
        {
            get
            {
                return this.selected;
            }
            set
            {
                this.selected = value;
                this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(this.Selected)));
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;
    }

When I select a cell with a ListView, nothing happens to the Selected field in the view model (everything is normally highlighted on the UI). In WPF, code like this works great.
Does anyone have any ideas why this is happening?

Answer 1

Did you do bidirectional binding?