VB.Net Inheritance requiring a reference

>>Class A cannot call a method from class C via class B
what do u mean by that?
is it override function in B?
can u give concrete example?

Class C
  public function DoThis() as string
end class C

Class B
  inherits C
  public function AlsoThis() as string
end class B

Class A
  dim test as Class B
  ?test.DoThis
end class A

This will work, but only if I reference both B and C with the project containing A. I was hoping to only reference B.

When you add a reference to B, you also need to add reference to C because it is used by B.

CodeCruiser, thats what I'm seeing. I was hoping there was another way.

I did find another way, which doesn't require the 2nd reference, but requires rewriting the function signatures.  I'm seeing pros and cons to this.

Class C
  public shared function DoThis() as string
  public shared function DoThat() as integer
end class C

Class B
  public shared function DoThis as string
    return C.DoThis
  end function
  public shared function DoThis as integer
    return C.DoThat
  end function
  public shared function AlsoThis() as string
end class B

Class A
  ?B.DoThis
end class A

With the 2nd way, A doesn't need a reference to C.

It does not need a reference correct but at runtime, A would need access to DLL file containing definition of C or you will get error.