The name 'Geoprocessing' does not exist in the current context

[TimWitt2]

I am trying the following example https://developers.arcgis.com/labs/pro/analysis-with-python/

But I get an error that "The name 'Geoprocessing' does not exist in the current context" and also "The name 'GPMessageBoxStyle' does not exist in the current context" .

I also noticed that a couple of my using are grayed out with the note "Using directives is unnecessary".

Anybody ran into this issue before?

[DavidMetzler1]

I ran  into this same problem. for anyone who needs it this is how I solved it. 

1. add using System.Reflection;  to the using calls of the RunPython.cs
2. add using ArcGIS.Desktop.Core.Geoprocessing;  to the using calls of the RunGP.cs

This resolved all errors for me

cheers