Question

I have a dll that includes:

public abstract class Module
{
   internal int ID;

   public abstract void ModuleStart();

}

public void function1() {}
public void function2() {}
//etc...

And then I have another dll that references the above dll and has:

class MyModule : Module
{
   public override void ModuleStart()
   {
      function1();

   }

}

What I’d like to be able to do is have function1 known the value of the calling module’s ID, without it being passed in. Is there a way to do this? Basically what I’m trying to do is, the main Module DLL is loaded up, a method is run that loads in the second dll, uses reflection to make sure it has a child of Module, assigns it an ID and runs ModuleStart. MyModule can then do what it needs, calling functions from the first dll in order to access internal protected memory, but when the functions are called they need to know the ID of the Module that called them. Is this possible? MyModule has no knowledge of its ID, nor an ability to change it.

Answer 1

.NET 4.5 adds some functionality to do something similar to this with the CallerMemberNameAttribute. Here’s a sample from the docs:

public void TraceMessage(string message,
        [CallerMemberName] string memberName = "",
        [CallerFilePath] string sourceFilePath = "",
        [CallerLineNumber] int sourceLineNumber = 0)
{
    Trace.WriteLine("message: " + message);
    Trace.WriteLine("member name: " + memberName);
    Trace.WriteLine("source file path: " + sourceFilePath);
    Trace.WriteLine("source line number: " + sourceLineNumber);
}