using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace DemoException
{
  static class Program
  {
    /// <summary>
    /// 應(yīng)用程序的主入口點(diǎn)。
    /// </summary>
    [STAThread]
    static void Main()
    {
      Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException);
      //處理UI線程異常
      Application.ThreadException += new System.Threading.ThreadExceptionEventHandler(Application_ThreadException);
      //處理非線程異常
      AppDomain.CurrentDomain.UnhandledException +=new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException) ;
      Application.EnableVisualStyles();
      Application.SetCompatibleTextRenderingDefault(false);
      Application.Run(new FrmMain());
      glExitApp = true;//標(biāo)志應(yīng)用程序可以退出
    }

    /// <summary>
    /// 是否退出應(yīng)用程序
    /// </summary>
    static bool glExitApp = false;

    /// <summary>
    /// 處理未捕獲異常
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
    {

      SaveLog("-----------------------begin--------------------------");
      SaveLog("CurrentDomain_UnhandledException"+DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss"));
      SaveLog("IsTerminating : " + e.IsTerminating.ToString());
      SaveLog(e.ExceptionObject.ToString());
      SaveLog("-----------------------end----------------------------");
      while (true)
      {//循環(huán)處理，否則應(yīng)用程序?qū)?huì)退出
        if (glExitApp)
        {//標(biāo)志應(yīng)用程序可以退出，否則程序退出后，進(jìn)程仍然在運(yùn)行
          SaveLog("ExitApp");
          return;
        }
        System.Threading.Thread.Sleep(2 * 1000);
      };
    }

    /// <summary>
    /// 處理UI主線程異常
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private static void Application_ThreadException(object sender, System.Threading.ThreadExceptionEventArgs e)
    {
      SaveLog("-----------------------begin--------------------------");
      SaveLog("Application_ThreadException:" + e.Exception.Message);
      SaveLog(e.Exception.StackTrace);
      SaveLog("-----------------------end----------------------------");
    }

    public static void SaveLog(string log)
    {
      string filePath =AppDomain.CurrentDomain.BaseDirectory+ @"\objPerson.txt";
      //采用using關(guān)鍵字，會(huì)自動(dòng)釋放
      using (FileStream fs = new FileStream(filePath, FileMode.Append))
      {
        using (StreamWriter sw = new StreamWriter(fs, Encoding.Default))
        {
          sw.WriteLine(log);
        }
      }
    }
  }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace DemoException
{
  public partial class FrmMain : Form
  {

    public FrmMain()
    {
      InitializeComponent();
    }

    private void FrmMain_Load(object sender, EventArgs e)
    {
      
    }

    private void btnTestUI_Click(object sender, EventArgs e)
    {
      int a = 0;
      int c = 10 / a;
    }

    private void btnTest2_Click(object sender, EventArgs e)
    {
      Thread t = new Thread(new ThreadStart(() =>
      {
        int a = 0;
        int c = 10 / a;
      }));
      t.IsBackground = true;
      t.Start();
    }
  }
}