Hi Yuri, Algorithmic Trading with NinjaTrader Lesson 16, The VisualStudio can,t recognize this method. It says, IOrder could not be found(). it has the red wiggly underline on it.

protected override void OnOrderUpdate(IOrder order)

 How to solve this problem?

I have NinjaTrader 8, Microsoft Visual Studio Community 2022 (64-bit) 

Version 17.0.5 

Thanks