C # calls to methods in different files or classes in the same project

There are two methods, one is to set the called class to static class statics, so it can be directly point out, and the second is to set the method of the call to public, which must be called in the class to be called first to the entity, new () out, and then point out.

One

public class a{

public void A () {};

}

public class b{

public void B () {

A aa = new A ();

AA.A ();

}

}

Two

Static Class a{

public void A () {};

}

Static Class b{

public void B () {

A.A ();

}

}

On exactly which method, depending on the circumstances, the individual biased to public, you can refer to a blog post mountains "talk about the static in C #" and post-blog comments, are very exciting ah.

C # calls to methods in different files or classes in the same project