private void timer1_Tick(object sender, EventArgs e)
   {


      this.Time = DateTime.Now;    

      Refresh();      
   }

#region draw clock
    private void UserClock_Paint(object sender, PaintEventArgs e)
    {
      Graphics dc = e.Graphics;
      Pen pn = new Pen(ForeColor);
      SolidBrush br = new SolidBrush(ForeColor);
      initCoordinates(dc); 
      DrawDots(dc, br);
      DrawHourHand(dc, pn);
      DrawSecondHand(dc, pn);
      DrawMinuteHand(dc, pn);
    }
    
    public void initCoordinates(Graphics dc)
    {
      if (this.Width == 0 || this.Height == 0) return;
      dc.TranslateTransform(this.Width / 2, this.Height / 2);
      dc.ScaleTransform(this.Height / 250F, this.Width / 250F);
    }
    public void DrawDots(Graphics dc, Brush brush)
    {
      int iSize;
      for (int i = 0; i <= 59; i++)
      {
        if (i % 5 == 0)
        {
          iSize = 15;
        }
        else
        {
          iSize = 5;
        }
        dc.FillEllipse(brush, -iSize / 2, -100 - iSize / 2, iSize, iSize);
        dc.RotateTransform(6);
      }
    }
    public virtual void DrawHourHand(Graphics grfx, Pen pn)
    {
      GraphicsState gs = grfx.Save();
      grfx.RotateTransform(360.0F * Time.Hour / 12 + 30.0F * Time.Minute / 60);
      grfx.DrawLine(pn, 0, 0, 0, -50);
      grfx.Restore(gs);
    }
    public virtual void DrawMinuteHand(Graphics grfx, Pen pn)
    {
      GraphicsState gs = grfx.Save();
      grfx.RotateTransform(360.0F * Time.Minute / 60 + 6.0F * Time.Second / 60);
      grfx.DrawLine(pn, 0, 0, 0, -70);
      grfx.Restore(gs);
    }
    public virtual void DrawSecondHand(Graphics grfx, Pen pn)
    {
      GraphicsState gs = grfx.Save();
      grfx.RotateTransform(360.0F * Time.Second / 60);
      grfx.DrawLine(pn, 0, 0, 0, -100);
      grfx.Restore(gs);
    }
    #endregion