byref, out and things alike

[shouzama]

Coming straight from VB6 (and .NET) to C#, I encountered some "logistic" problems in the way the new MS language handles objects and structs.

 

Let's suppose we have

 

cDummy dummy_obj = new cDummy(dummyparams);
cDummy dymmy_copy = null;

 

In VB, an assignment like

dummy_copy = dummy_obj

simply makes dummy_copy reference the same object referenced by dummy_obj.

 

So, my first question is:

- In c#, does the same thing happen?

 

Let's go a little further.

Suppose we have a class with a private object of class cDummy, and a property that returns this object

private cDummy dummy_obj;

public property GetObject
{
   get
   {
       return dummy_obj;
   }
}

 

- Does the property returns a COPY of the object or a REFERENCE to the object?

If I do:

cDummy dummy_copy;
dummy_copy = dummyclass.GetObject;

does dummy_copy hold a copy of the object in dummyclass OR a reference to the same object?

 

And WHY I can't pass "byref dummyclass.GetObject" to functions?