C# (CSharp) ApplyClick примеры использования

Пример #1

        public RequireAdminRightsWindow()
        {
            InitializeComponent();

            btApply.Click += (o, e) =>
            {
                btCancel.IsEnabled = btApply.IsEnabled = false;
                ApplyClick?.Invoke();
            };
            btCancel.Click += (o, e) => CancelClick?.Invoke();
        }

Пример #2

 protected virtual void OnApplyClick(EventArgs e)
 {
     ApplyClick?.Invoke(this, e);
 }