C# 深入学习 之 Winform记录日志

using System;
using System.Windows.Forms;
using ST = System.Threading;
using SWF = System.Windows.Forms;
using T = System.Diagnostics.Trace;

namespace WindowsFormsApplication1
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.ThreadException += new System.Threading.ThreadExceptionEventHandler(OnAppException);
            Application.ThreadExit += new EventHandler(OnAppExit);
            string logFile = string.Format("{0}{1}", AppDomain.CurrentDomain.BaseDirectory, "Applog.txt");
            System.IO.TextWriter log = new System.IO.StreamWriter(logFile);

            if (true)
            {
                System.Diagnostics.TextWriterTraceListener logger;
                logger = new System.Diagnostics.TextWriterTraceListener(log);
                System.Diagnostics.Trace.Listeners.Add(logger);
                System.Diagnostics.Trace.WriteLine("App starting:" + DateTime.Now);
 
            }
            Application.Run(new Form1());
        }

        /// <summary>
        /// Generic exception handler for application.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private static void OnAppException(object sender, ST.ThreadExceptionEventArgs e)
        {
            Exception ex;
            ex = e.Exception;

            // inform user...
            SWF.MessageBox.Show("Halting due to error: " + ex.Message, "Bank Customer App", System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Error);

            // log it (the entire exception chain)...
            T.WriteLine("Generic Application Exception Handler:");
            while (ex != null)
            {
                T.WriteLine(ex.GetType().FullName);
                T.Indent();
                T.WriteLine("Msg: " + ex.Message);
                T.WriteLine("Trace: " + ex.StackTrace);
                T.Unindent();
                T.Flush();

                ex = ex.InnerException;
            }//while

            // halt app
            T.Close();
            SWF.Application.Exit();
        }

        /// <summary>
        /// Called during normal application termination.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private static void OnAppExit(object sender, System.EventArgs e)
        {
            T.Close();  // close trace file
        }
    }
}