I am having problems in the new C++ Class with NuGet

I am trying to add System.IO to my new c++ class however every time i try to add it I get this error,

“Severity Code Description Project File Line Suppression State
Error Could not install package ‘System.IO 4.3.0’. You are trying to install this package into a project that targets ‘native,Version=v0.0’, but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author.”

I am am on like the edge of being a beginner and having a decent amount of programming under me however as much as i look this up I cant seem to find why this isnt working and its stopping me from trying to port over this idea i had for the game