Hi,

I think there is a bug in VS 2003 as well as VS 2005 C# compiler. Let me
explain:

I have created 3 projects in my solution:

ClassLibrary1, ClassLibrary2 and ClassLibrary3.

Now each of these libraries has a single public class in it (classes r named
as  A, B and C respectively) and the class defined in 2nd library is derived

from the class in first library as:
************
//in ClassLibrary1
public class A
{
//constructor
}

//in ClassLibrary2

using ClassLibrary1;

public class B : A
{
//public constructor
}

//in ClassLibrary2

using ClassLibrary2;

public class C : A
{
//public constructor
public C()
{
  B b1 = new B();
}
}

Here, ClassLibrary1 is referenced in project ClassLibrary2 and ClassLibrary2
is referenced in project ClassLibrary3.

Also, Class C defined in ClassLibrary3 is using an object of B in it.

But when i compile this code, i get an error saying:

e:\ClassLibrary3\bin\Debug\ClassLibrary2.dll Referenced class
'ClassLibrary2.B' has base class or interface 'ClassLibrary1.A' defined in an
assembly that is

not referenced.  You must add a reference to assembly 'ClassLibrary1'.

According to me, we dont need to reference ClassLibrary1 as it is already
being referenced by ClassLibrary2 so this should compile fine. But i may be
wrong.

I owuld be grateful if someone could shed light on this.

Thanks

Vivek