public void buttonOnClicky(object sender, EventArgs e)
        {
            product.ProductID = Int32.Parse(((Button)sender).Name);      //Conseguir id
            CustomSizeEventArgs args = new CustomSizeEventArgs(product); //se le pasa los argumentos al evento

            OnButtonSizeClicky(args);
        }
        public event EventHandler <CustomSizeEventArgs> ButtonSizeClicky; //Creacion del evento

        public virtual void OnButtonSizeClicky(CustomSizeEventArgs e)
        {
            ButtonSizeClicky?.Invoke(this, e); //Invocar el evento
        }