using CommunityToolkit.Mvvm.ComponentModel; using DMS.Core.Models; using DMS.WPF.Interfaces; using DMS.WPF.ViewModels.Items; namespace DMS.WPF.ViewModels; public abstract class ViewModelBase : ObservableObject,INavigatable { public virtual void OnLoaded() { } public virtual void OnLoading() { } public virtual async Task OnExitAsync() { return true; } public virtual async Task OnNavigatedToAsync(NavigationParameter parameter) { } public virtual async Task OnNavigatedFromAsync(NavigationParameter parameter) { } }