program.cs

static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
ApplicationException.Run(call); // 調用異常信息捕獲類，進行異常信息的捕獲
}

// 應用程序，入口邏輯
public static void call()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);

LogFile.instance.Start();
string Msg = string.Format("程序開始啟動!!!");
LogFile.instance.LogInfo(Msg);
Application.Run(new FormMain());
}
}

ApplicationException.cs

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

namespace Degassing
{
/// <summary>
/// 此類用於捕獲Application異常信息
/// </summary>
class ApplicationException
{
/// <summary>
/// 定義委托接口處理函數，調用此類中的Main函數為應用添加異常信息捕獲
/// </summary>
public delegate void ExceptionCall();

public static void Run(ExceptionCall exCall)
{
try
{
//設置應用程序處理異常方式：ThreadException處理
Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException);
//處理UI線程異常
Application.ThreadException += new System.Threading.ThreadExceptionEventHandler(Application_ThreadException);
//處理非UI線程異常
AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);

if (exCall != null) exCall();
}
catch (Exception ex)
{
string str = GetExceptionMsg(ex, string.Empty);
MessageBox.Show(str, "系統錯誤", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}

static void Application_ThreadException(object sender, System.Threading.ThreadExceptionEventArgs e)
{
string str = GetExceptionMsg(e.Exception, e.ToString());
MessageBox.Show(str, "系統錯誤", MessageBoxButtons.OK, MessageBoxIcon.Error);
Application.Exit();
}

static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
{
string str = GetExceptionMsg(e.ExceptionObject as Exception, e.ToString());
MessageBox.Show(str, "系統錯誤", MessageBoxButtons.OK, MessageBoxIcon.Error);
Application.Exit();
}

/// <summary>
/// 生成自定義異常消息
/// </summary>
/// <param name="ex">異常對象</param>
/// <param name="backStr">備用異常消息：當ex為null時有效</param>
/// <returns>異常字符串文本</returns>
static string GetExceptionMsg(Exception ex, string backStr)
{
StringBuilder sb = new StringBuilder();
sb.AppendLine("****************************異常文本****************************");
sb.AppendLine("【出現時間】：" + DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss"));
if (ex != null)
{
sb.AppendLine("【異常類型】：" + ex.GetType().Name);
sb.AppendLine("【異常信息】：" + ex.Message);
sb.AppendLine("【堆棧調用】：" + ex.StackTrace);
sb.AppendLine("【異常方法】：" + ex.TargetSite);
}
else
{
sb.AppendLine("【未處理異常】：" + backStr);
}
sb.AppendLine("***************************************************************");

string strMsg = sb.ToString();
WriteLog(strMsg);
return strMsg;
}

static void WriteLog(string msg)
{
using (System.IO.StreamWriter file = new System.IO.StreamWriter(Application.StartupPath + "/log/exception.txt", true))
{
file.WriteLine(msg);
}
}
}
}

C# 應用異常捕獲