MvvmComponentBase.cs

public interface IViewModel : INotifyPropertyChanged
{
}

public class MvvmComponentBase : ComponentBase
{
  private IViewModel _viewModel;
  
  public IViewModel ViewModel
  {
    get { return _viewModel; }
    set
    {
      if(value != null)
      {
        _viewModel.PropertyChanged -= (o, e) => StateHasChanged();
        value.PropertyChanged += (o, e) => StateHasChanged();
      }
      
      _viewModel = value;
    }
  }
}