WPF PRISM 绑定事件及拖拽研究

 

public RelayCommand WindowSizeChangedCommand
{
    get
    {
        if (WindowSizeChangedCommand == null)
                WindowSizeChangedCommand = new RelayCommand(param => WidowSizeChanged(param));

            return WindowSizeChangedCommand;
    }
}

public void WindowSizeChanged(object param)
{
    int width = Convert.ToInt32(param);
}

https://prismlibrary.com/docs/wpf/interactivity/event-to-command.html