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
}