public RoutingEventArgs(RouteContext toContext, string fromRoute, object fromVm)
 {
     To   = new RouteInfo(toContext);
     From = new RouteInfo(fromVm, fromRoute);
 }
 public RouteInfo(RouteContext routeContext) : this(routeContext.ViewModel, routeContext.Route)
 {
 }
 public RoutedEventArgs(RouteContext routeContext) : this(new RouteInfo(routeContext))
 {
 }