如何将 WPF 按钮的单击事件绑定到 ViewModelBase 中的命令？

<code class="language-xml"><grid><grid.columndefinitions><columndefinition width="*"></columndefinition></grid.columndefinitions>
</grid></code>

<code class="language-csharp">// MainWindow.xaml.cs
public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        DataContext = new ViewModelBase();
    }
}</code>

<code class="language-csharp">// ViewModelBase.cs
public class ViewModelBase : INotifyPropertyChanged // Added INotifyPropertyChanged
{
    private ICommand _clickCommand;

    public ICommand ClickCommand
    {
        get
        {
            return _clickCommand ?? (_clickCommand = new CommandHandler(() => MyAction(), () => CanExecute));
        }
    }

    public bool CanExecute
    {
        get
        {
            // 定义命令是否可执行的逻辑
            // 在此示例中，始终返回true
            return true;
        }
    }

    public void MyAction()
    {
        // 实现按钮单击时要执行的操作
    }

    public event PropertyChangedEventHandler PropertyChanged;

    protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}</code>

<code class="language-csharp">// CommandHandler.cs
public class CommandHandler : ICommand
{
    private Action _action;
    private Func<bool> _canExecute;

    public CommandHandler(Action action, Func<bool> canExecute)
    {
        _action = action;
        _canExecute = canExecute;
    }

    public event EventHandler CanExecuteChanged
    {
        add { CommandManager.RequerySuggested += value; }
        remove { CommandManager.RequerySuggested -= value; }
    }

    public bool CanExecute(object parameter)
    {
        return _canExecute.Invoke();
    }

    public void Execute(object parameter)
    {
        _action();
    }
}</code>