In C++, I can have a foo.h like that
#include "a.h"
#include "b.h"
#include "c.h"
And if I include foo.h in another file, I can use everything that is in a.h, b.h and c.h without having to import them each time
Is there a way to do something similar in c#?
Something like regrouping
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
and every using that I always use in one namespace