在不使用System.Windows.Input.ICommand的情况下在WPF中实现MVVM

    <i:Interaction.Triggers>
        <i:EventTrigger EventName="Click">
            <i:InvokeCommandAction Command="{Binding MyCommand}" CommandParameter="{Binding ElementName=MyButton}"/>
        </i:EventTrigger>
    </i:Interaction.Triggers>
</Button>

xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"

public class MyViewModel : INotifyPropertyChanged
{
    public event PropertyChangedEventHandler PropertyChanged;

    private ICommand myCommand;

    public ICommand MyCommand
    {
        get
        {
            if (myCommand == null)
            {
                myCommand = new RelayCommand(param => this.ExecuteMyCommand(param));
            }

            return myCommand;
        }
    }

    private void ExecuteMyCommand(object parameter)
    {
        // 在此处实现业务逻辑
    }
}

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        this.DataContext = new MyViewModel();
    }
}