WPF MVVM 属性更改动画

WPF MVVM 属性更改动画指的是在使用 WPF （Windows Presentation Foundation）框架的 MVVM（Model-View-ViewModel）架构中，通过属性更改来实现动画效果。这种方法是为了在应用程序中创建平滑的过渡效果，提高用户体验。本文将介绍如何 ，并提供一个案例代码来演示这一概念。

csharp
public class MainWindowViewModel : INotifyPropertyChanged
{
    private bool isAnimating;
    public bool IsAnimating
    {
        get { return isAnimating; }
        set
        {
            if (isAnimating != value)
            {
                isAnimating = value;
                OnPropertyChanged(nameof(IsAnimating));
            }
        }
    }
    public event PropertyChangedEventHandler PropertyChanged;
    protected virtual void OnPropertyChanged(string propertyName)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}
public partial class MainWindow : Window
{
    private MainWindowViewModel viewModel;
    public MainWindow()
    {
        InitializeComponent();
        viewModel = new MainWindowViewModel();
        DataContext = viewModel;
    }
    private void StartAnimation_Click(object sender, RoutedEventArgs e)
    {
        viewModel.IsAnimating = true;
    }
    private void StopAnimation_Click(object sender, RoutedEventArgs e)
    {
        viewModel.IsAnimating = false;
    }
}

xaml
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="450" Width="800">