title: How to set true in ProgressRing
body: <p>I ran into a weird problem. I need to set Busy = true to return new Command (() => this value should be accepted by ProgressRing. The fact is that in the case of return new Command (() something goes wrong ...</p>
  
  <pre><code>&lt;Controls:ProgressRing Foreground="{DynamicResource AccentColorBrush}" IsActive="{Binding Busy}"  Grid.Column="3" Grid.Row="6" Height="40" Width="40"/&gt;
  
   public ICommand Test
          {
              get
              {
                  Busy = true; // This work
                  return new Command(() =&gt;
                  {
                      Busy = true; //This not work
                  });
              }
          }
  </code></pre>