C#

namespace System.Diagnostics
{
    public class LogConsole
    {
        public static readonly LogConsole Instance = new LogConsole();
        private LogConsoleWrapper LogConsoleForm = new LogConsoleWrapper();

        public void Show()
        {
            LogConsoleForm.Show();
        }

        public void Hide()
        {
            LogConsoleForm.Hide();
        }

        public void Focus()
        {
            LogConsoleForm.Focus();
        }

        public void WriteLine(string message)
        {
            LogConsoleForm.Write(message);
        }

        public void WriteLine(string message, bool error)
        {
            LogConsoleForm.Write(message, error);
        }

        public void WriteLine(string message, Exception ex)
        {
            LogConsoleForm.Write(message, (Exception)ex);
        }
    }

    public class LogConsoleWrapper : System.Windows.Forms.Form
    {
        /// <summary>
		/// Required designer variable.
		/// </summary>
		/// 
		private System.ComponentModel.Container components = null;

        static string sSource = "PIMSLite2008 Log Console";
        static string sLog = "Application";

        public LogConsoleWrapper()
		{
			InitializeComponent();

            if (!EventLog.SourceExists(sSource))
                EventLog.CreateEventSource(sSource, sLog);

            clock.Start();
            lblUser.Text = System.Environment.UserName.ToString().ToUpper();
		}

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// 
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region User Defined Code

        private void clock_Tick(object sender, EventArgs e)
        {
            lblDate.Text = DateTime.Now.ToShortDateString();
            lblTime.Text = DateTime.Now.ToLongTimeString();
        }

        public void Write(string message)
        {
            string[] tmp = new string[3];

            tmp[0] = DateTime.Now.ToLongTimeString() + " " + DateTime.Now.ToShortDateString();

            tmp[1] = "N/A";

            tmp[2] = message;

            dgLog.Rows.Add(tmp);
        }

        public void Write(string message, bool error)
        {
            string[] tmp = new string[3];

            tmp[0] = DateTime.Now.ToLongTimeString() + " " + DateTime.Now.ToShortDateString();

            if (error == true)
            {
                tmp[1] = "Error";
            }
            else
            {
                tmp[1] = "Information";
            }

            tmp[2] = message;

            dgLog.Rows.Add(tmp);
        }

        public void Write(string message, Exception ex)
        {
            string[] tmp = new string[3];

            tmp[0] = DateTime.Now.ToLongTimeString() + " " + DateTime.Now.ToShortDateString();
            tmp[1] = "Error";
            tmp[2] = message;

            dgLog.Rows.Add(tmp);

            string errorMessage = "USER: " + System.Environment.UserName + "\r\n" + new String('-', 100) + "\r\nFUNCTION: " + System.Reflection.MethodBase.GetCurrentMethod().ToString() + "\r\n" + new String('-', 100) + "\r\nSOURCE: \r\n" + ex.Source + "\r\n" + new String('-', 100) + "\r\nMESSAGE: \r\n" + ex.Message + "\r\n" + new String('-', 100) + "\r\nCUSTOM MESSAGE:\r\n" + message + "\r\n" + new String('-', 100) + "\r\nSTACK TRACE: \r\n" + ex.StackTrace;
            EventLog.WriteEntry(sSource, errorMessage, System.Diagnostics.EventLogEntryType.Error);
        }

        #endregion