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Digital Clock with Date

using System; using System.Drawing; using System.Windows.Forms;     class DigitalClock: Form {      public static void Main()      {           Application.Run(new DigitalClock());      }      public DigitalClock()      {           ResizeRedraw = true;           Timer timer    = new Timer();           timer.Tick    += new EventHandler(TimerOnTick);           timer.Interval = 1000;           timer.Start();      }      private void TimerOnTick(object obj, EventArgs ea)      {           Invalidate();      }      protected override void OnPaint(PaintEventArgs pea)      {           Graphics grfx    = pea.Graphics;           DateTime dt      = DateTime.Now;           string   strTime = dt.ToString("d") + "\n" + dt.ToString("T");           SizeF    sizef   = grfx.MeasureString(strTime, Font);           float    fScale  = Math.Min(ClientSize.Width  / sizef.Width,                                       ClientSize.Height / sizef.Height);           Font     font    = new Font(Font.FontFamily,                                       fScale * Font.SizeInPoints);               StringFormat strfmt = new StringFormat();           strfmt.Alignment = strfmt.LineAlignment = StringAlignment.Center;               grfx.DrawString(strTime, font, new SolidBrush(ForeColor),                            ClientRectangle, strfmt);      } }