How can I add a basic polyline?

Jul 11, 2013 at 3:48 PM
Here is what I have, but it won't draw any lines on the screen
                Polyline line = new Polyline();
                //PhysicsSprite phys = addSprite.LastOrDefault();
                System.Windows.Point point = new System.Windows.Point(0, 0);
                line.Points.Add(point);
                point.Y = 50;
                line.Points.Add(point);
                cnvGame.Children.Add(line);