private void RefreshView()
 {
     _Graph = null;
     OnPropertyChanged(nameof(Fitness1));
     OnPropertyChanged(nameof(Fitness2));
     OnPropertyChanged(nameof(BestIndex1));
     OnPropertyChanged(nameof(BestIndex2));
     OnPropertyChanged(nameof(BestIndividual1));
     OnPropertyChanged(nameof(BestIndividual2));
 }
 public GraphPathVM(GraphVM parent)
 {
     this.Parent = parent;
 }