Help getting started with GLControl

I am following the docs on using GLControl with Windows forms. I am using C++/CLI though, not C#. Starting with a basic projec t (VS2010) I added OpenTK to the and GLControl to the references, and dropped a GLControl on the form. (It is the only control).

The class itself has a private boolean flag that I set to false in the constructor and switch to true in the Load event of GLControl.

I then hook in the Paint event:

                System::Void glControl1_Paint(System::Object^  sender, System::Windows::Forms::PaintEventArgs^  e) {
                    if (!loaded)
                        return;               
 
                    GL.ClearColor(0.0, 0.0, 0.0, 1.0);
                    GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit)                   
                    glControl1->SwapBuffers();
                }

However, both lines which make calls to GL fire syntax errors saying theres a missing ; before the .

What could I be missing? Any help is appreciated.