How to draw points using sharpgl (C#).

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C#

I am trying to draw points using sharpgl but when the code is compiled it gives only white console with no output why is this happening and what is the solution of this thanks in advance.

private static int width = 400, height = 300;
        static void Main(string[] args)
        {

            Glut.glutInit();
            Glut.glutInitDisplayMode(Glut.GLUT_SINGLE | Glut.GLUT_RGB);
            Glut.glutInitWindowSize(width, height);
            Glut.glutCreateWindow("OpenGL Tutorial");
            init();
            Glut.glutDisplayFunc(OnDisplay);
            Glut.glutMainLoop();
        }

        private static void OnDisplay()
        {
            Gl.glClear(Gl.GL_COLOR_BUFFER_BIT | Gl.GL_DEPTH_BUFFER_BIT);
            Gl.glLoadIdentity();
            Gl.glTranslatef(0.0f, 0.0f, -4.0f);
            Gl.glColor3f(0.0f, 0.0f, 1.0f);
            Gl.glPointSize(10.0f);
            Gl.glBegin(Gl.GL_POINTS);
            Gl.glVertex3f(1.0f, 1.0f, 0.0f);
            Gl.glVertex3f(-1.0f, -1.0f, 0.0f);
            Gl.glEnd();
        }
        static void init()
        {

            Gl.glClearColor(1.0f, 1.0f, 1.0f, 0.0f);
            Gl.glMatrixMode(Gl.GL_PROJECTION);
        }