创建第一个应用

dotnet new CT -o CounterApp
cd CounterApp

ViewModel

public partial class CounterViewModel : ObservableObject
{
    [ObservableProperty] private int _count;
    public void Increment() => Count++;
    public void Decrement() => Count--;
    public void Reset() => Count = 0;
}

View

<UserControl ViewModelLocator.AutoWireViewModel="True">
    <StackPanel HorizontalAlignment="Center" Spacing="10">
        <TextBlock Text="{Binding Count}" FontSize="48"/>
        <StackPanel Orientation="Horizontal" Spacing="10">
            <Button Content="-" Command="{Binding Decrement}"/>
            <Button Content="Reset" Command="{Binding Reset}"/>
            <Button Content="+" Command="{Binding Increment}"/>
        </StackPanel>
    </StackPanel>
</UserControl>

注册

services.AddMvvmTransient<CounterView, CounterViewModel>();
// MainWindow: 在 CreateShell 中调用 CreateShell<MainWindow, MainView>()

dotnet run

延伸阅读

工作原理： 架构原理 — 启动流程与 MVVM 绑定 — 启动顺序、ViewModelLocator 自动绑定，以及为何只有 ViewModel 进入 DI。