C# animation with opengl

[mr07th]

Hi everyone, i'm working with tao framework and i trying to make animation for my models from glut libraries but animation with using glut doesn't work (after compiling program closes) :( I tried found exception by try-catch but there are not exceptions. If drawing across vertex that animation will work. Static picture draws. Someone faced with that problem of glut animation ?

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Tao.OpenGl;
using Tao.FreeGlut;
using Tao.Platform.Windows;

namespace WindowsFormsApplication9
{
    public partial class Form1 : Form
    {
        int angle = 100;
        public Form1()
        {
            InitializeComponent();
            AnT.InitializeContexts();
            Glut.glutTimerFunc(30, timer, 0);
            Glut.glutMainLoop();
        }
        public void timer(int Unused)
        {
            Glut.glutPostRedisplay();
            Glut.glutTimerFunc(30, timer, 0);
        }

        private void AnT_Load(object sender, EventArgs e)
        {
            // inizialization Glut 
            Glut.glutInit();
            Glut.glutInitDisplayMode(Glut.GLUT_RGB | Glut.GLUT_DOUBLE | Glut.GLUT_DEPTH);

            // clearing window
            Gl.glClearColor(255, 255, 255, 1);

            Gl.glViewport(0, 0, AnT.Width, AnT.Height);

            // setting of projection
            Gl.glMatrixMode(Gl.GL_PROJECTION);
            Gl.glLoadIdentity();
            Glu.gluPerspective(100, (float)AnT.Width / (float)AnT.Height, 0.1, 200);
            Gl.glMatrixMode(Gl.GL_MODELVIEW);
            Gl.glLoadIdentity();

            // setting of parameters OpenGL for visualisation
            Gl.glEnable(Gl.GL_DEPTH_TEST);
            Gl.glClear(Gl.GL_COLOR_BUFFER_BIT | Gl.GL_DEPTH_BUFFER_BIT);

            Gl.glLoadIdentity();
            Gl.glColor3f(1.0f, 0, 0);

            Gl.glPushMatrix();

            Gl.glTranslated(-1, 0, -3);
            Gl.glRotated(angle, 0, 1, 0);
            Glut.glutWireCylinder(1, 2, 20, 20);
            Gl.glPopMatrix();
            Glut.glutSwapBuffers();
            angle++;
            AnT.Invalidate();
        }
    }
}