Windows Service for taking screenshots

public partial class ScreenShots : ServiceBase
    {
        Timers.Timer timer1 = new Timers.Timer();
        public ScreenShots()
        {
            InitializeComponent();
        }

        protected override void OnStart(string[] args)
        {
            try
            {
                timer1.Enabled = true;
                timer1.Elapsed += new Timers.ElapsedEventHandle(timer1_Elapsed);
                timer1.Interval = 2000;
                timer1.Start();
            }
            catch (Exception exp)
            {
            File.AppendAllText@"D:\LoggerForScrnShotService.txt",exp.Message);
            }            
        }

        protected override void OnStop()
        {
            try
            {
     File.AppendAllText(@"D:\LoggerForScrnShotService.txt", "Service Stopped"); 
     timer1.Enabled = false;
            }
            catch (Exception exp)
            {
     File.AppendAllText(@"D:\LoggerForScrnShotService.txt", exp.Message);
            }
        }

        private void timer1_Elapsed(object sender, EventArgs e)
        {
            try
            {
//Initialise a Bitmap object with the working area of the desktop as the image
Bitmap bmp = new Bitmap(Screen.PrimaryScreen.WorkingArea.Width,     Screen.PrimaryScreen.WorkingArea.Height);

//Creates a graphics object from the bitmap image.
Graphics gImage = Graphics.FromImage(bmp);

Point upperLeftSource = new Point(Screen.PrimaryScreen.WorkingArea.X, Screen.PrimaryScreen.WorkingArea.Y);

Point upperLeftDestination = new Point(0, 0);

//The source i.e. the desktop working area will be copied
gImage.CopyFromScreen(upperLeftSource, upperLeftDestination, Screen.PrimaryScreen.Bounds.Size, CopyPixelOperation.SourceCopy);                

//Save the file with the current date and time file name as format as jpeg
string fileName = DateTime.Now.ToString("ddMMMyyyy_hhmmss") + ".jpeg";
bmp.Save(@"D:\SaveScreenShots\" + fileName, ImageFormat.Jpeg);

File.AppendAllText(@"D:\LoggerForScrnShotService.txt", "Screenshottaken");                
            }
            catch (Exception exp)
            {
File.AppendAllText(@"D:\LoggerForScrnShotService.txt", exp.InnerException.Message);
File.AppendAllText(@"D:\LoggerForScrnShotService.txt", exp.StackTrace);
            }
        }
    }