Visual Studio 2013 underlines code where there is no actual code and compiles without errors, how can I fix this?

Question

Programming

Visual Studio 2013 underlines code where there isn't really any code and compiles without errors.
For example, this:

Or this:

And a whole bunch of code that he underlines. Is there any way to fix this?

Answer 1

If your coursework is in C, I would recommend that you take raw C, the studio has it. If you want to work with .Net, then I recommend using C#. You have chosen a very atypical bunch of solutions for yourself (C ++ and WinForms), it will be difficult for you to figure it out.

Answer 2

So you hover over this underlining and read what she wants, this studio. Most likely, either you don’t use this namespace and you can remove it, or vice versa, shorten the class path through using. Optimizations, in short.