如何使用DataTemplate + Triggers在视图之间切换

    <DataTemplate x:Key="View1Template">
        <Grid>
            <TextBlock Text="View 1" />
        </Grid>
    </DataTemplate>
    <DataTemplate x:Key="View2Template">
        <Grid>
            <TextBlock Text="View 2" />
        </Grid>
    </DataTemplate>
</Window.Resources>

public class ViewModel : INotifyPropertyChanged
{
    private string _currentView;

    public string CurrentView
    {
        get { return _currentView; }
        set
        {
            _currentView = value;
            OnPropertyChanged("CurrentView");
        }
    }

    public event PropertyChangedEventHandler PropertyChanged;

    protected virtual void OnPropertyChanged(string propertyName)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}

   <ContentControl.Style>
       <Style TargetType="ContentControl">
           <Setter Property="Visibility" Value="Collapsed" />
           <Style.Triggers>
                <DataTrigger Binding="{Binding CurrentView}" Value="View1">
                   <Setter Property="Visibility" Value="Visible" />
                </DataTrigger>
            </Style.Triggers>
        </Style>
    </ContentControl.Style>
</ContentControl><ContentControl ContentTemplate="{StaticResource View2Template}" Visibility="Collapsed">
   <ContentControl.Style>
       <Style TargetType="ContentControl">
           <Setter Property="Visibility" Value="Collapsed" />
           <Style.Triggers>
                <DataTrigger Binding="{Binding CurrentView}" Value="View2">
                   <Setter Property="Visibility" Value="Visible" />
                </DataTrigger>
            </Style.Triggers>
        </Style>
    </ContentControl.Style>
</ContentControl>

public MainWindow()
{
    InitializeComponent();
    DataContext = new ViewModel();
}

((ViewModel)DataContext).CurrentView = "View1";