Binding to a static property in WinRT - xaml

Question

I believe this is possible, but I don't seem to be able to get it to work; here's my view model:
namespace MyApp.ViewModel
{
public class MainViewModel : INotifyPropertyChanged
{
private static MainViewModel _mvm;
public static MainViewModel MVM()
{
if (_mvm == null)
_mvm = new MainViewModel();
return _mvm;
}
private string _imagePath = #"c:\location\image.png";
public string ImagePath
{
get { return _imagePath; }
set
{
SetProperty<string>(ref _imagePath, value);
}
}
public event PropertyChangedEventHandler PropertyChanged;
protected bool SetProperty<T>(ref T storage, T value, [CallerMemberName] String propertyName = null)
{
if (Equals(storage, value)) return false;
storage = value;
OnPropertyChanged<T>(propertyName);
return true;
}
private void OnPropertyChanged<T>([CallerMemberName]string caller = null)
{
var handler = PropertyChanged;
if (handler != null)
{
handler(this, new PropertyChangedEventArgs(caller));
}
}
...
Here's my App.xaml:
xmlns:vm="using:MyApp.ViewModel">
<Application.Resources>
<ResourceDictionary>
<vm:MainViewModel x:Key="MainViewModel" />
</ResourceDictionary>
</Application.Resources>
Here's the binding:
<Page
...
DataContext="{Binding MVM, Source={StaticResource MainViewModel}}">
<StackPanel Orientation="Horizontal" Margin="20" Grid.Row="0">
<TextBlock FontSize="30" Margin="10">Image</TextBlock>
<TextBox Text="{Binding ImagePath}" Margin="10"/>
</StackPanel>
...
I don't seem to be able to get the binding to work; what have I missed here? I would expect the field to be populated with the default value, but it isn't; I've put breakpoints in the ViewModel, but it is not breaking.

Answer 1

To me your binding syntax is incorrect. DataContext="{Binding MVM, Source={StaticResource MainViewModel} means you should have a "MVM" PROPERTY in your MainViewModel class. In your case MVM is a method.
Try replacing your MVM method by a property. That might work.
Another way to do it, is to set
DataContext="{StaticResource MainViewModel}"
In that case, the MVM method will be obsolete (I did not try it on WinRT)