Check from which Class the object has been created

Question

I was searching for a common question but couldn't find any solution even after googling. Maybe I am searching wrong?

Is it possible to know from which class the object has been created? For Example: In Visual Basic Code:

I have a class,

Public Class dummyA

End Class

I have another class,

Public Class dummyMain
    Dim dmmA As New dummyA
End Class

Can I check in dummyA , if the object has been created from dummyMain?

Answer with c# or VB.Net would be great. Thanks.

Answer 1

Easiest way is to have an overloaded constructor and pass the owner into it.

public class DummyA
{
    public DummyA(object owner)
    {
       var createdByDummyMain = owner is DummyMain;
    }
}

and then do

public class DummyMain
{
    public DummyMain()
    {
        var dmmA = new DummyA(this);
    }
}

There is also this but it won't give you exactly what you want. There are other proposals too that deal with StackFrame but it isn't reliable due to JIT optimizations.