C# - passing class reference to a C# DLL, and then accessing it

Question

I'm wondering if I am allowed to pass value reference of class that loaded the DLL to the DLL and then access the class through that value saved. I have not found any sources ever mentioning or any examples showing such. I do imagine you would traditionally rather call upon a function(s) inside the DLL, and return values, but I am working on a game server and want to have DLL's have access to document classes, especially the main program class, and directly modify numbers needed. For as3 I can do this example down below.

class = new _Class(MovieClip(this)); //passes current class value `ref`

And then inside _Class , you save it like such

           public var saveValueRefOfClass:MovieClip;

            public function Entity(val:MovieClip)
            {
                this.saveValueRefOfClass = val; //save it
            }

and then access the value ref inside the _Class like so;

    saveValueRefOfClass.anyFunc(); //call back to that class

Answer 1

Besides strongly recommending against this approach in comments, you can do this by simply including the main .exe dependency to your DLL project.

In the solution explorer, just right-click in the DLL project -> Add -> Reference and select the executable project name in the tab Projects .

This will expose all public names declared in the executable project to your DLL project.