private void Form1_Load(object sender, EventArgs e)
        {
            AddConeSourceToRenderWindow(this.renderWindowControl1.RenderWindow);
            AddConeSourceToSecondRenderWindow();

            Kitware.VTK.RenderWindowControl ctl2 = new Kitware.VTK.RenderWindowControl();
            ctl2.Dispose();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            AddConeSourceToRenderWindow(this.renderWindowControl1.RenderWindow);
              AddConeSourceToSecondRenderWindow();

              Kitware.VTK.RenderWindowControl ctl2 = new Kitware.VTK.RenderWindowControl();
              ctl2.Dispose();
        }