using CommunityToolkit.Mvvm.ComponentModel; using CommunityToolkit.Mvvm.Input; using System; namespace MvvmAppCore.ViewModels { public partial class MainWindowViewModel : ObservableObject { public string Title { get; set; } [ObservableProperty] private string _customer; public MainWindowViewModel() { Title = "MyIocName"; // } [RelayCommand] private void Add() { Console.WriteLine("Do Add"); } [RelayCommand] private void Update() { Customer = "New Customer"; } } }