using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;namespace WpfApp1.viewmodels
{public partial class TestMvvm:ObservableObject{private string _name = "old";public string Name{get => _name;set => SetProperty(ref _name, value);}public IRelayCommand ChangeText { get; }public TestMvvm() { ChangeText = new RelayCommand(()=> { Name = "new"; }); }}
}

屬性得自己寫 用不了[ObversableProperty]? ? RelayCommand得自己實現

改StartUpUri

StartupUri="views/MainWindow.xaml">

用斜線不用點

加DataContext

<Window.DataContext><local:TestMvvm></local:TestMvvm></Window.DataContext>

? ??

改x：class

x:Class="WpfApp1.views.MainWindow"

? ?總結? ? 有mainwindow的地方都要改? 路徑多加一個views

1. 在 C# 中，命名空間通常是?項目名.文件夾名（如果文件夾有嵌套命名空間）。就不用viewmodels.WpfApp1.viewmodels? 直接項目名.文件夾名即可??? ? ? ? ? ? ??????????????????????????????????????????????也就是命名空間不需要加文件夾名