C# 捕获全局亲测可用

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

namespace WindowsFormsApp9
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            LogHepler log = new LogHepler();
            try
            {
                //处理未捕获的异常
                Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException);
                //处理UI线程异常
                Application.ThreadException += new System.Threading.ThreadExceptionEventHandler(Application_ThreadException);
                //处理非UI线程异常
                AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                Application.Run(new Form1());
            }
            catch (Exception ex)
            {
                string str = "";
                string strDateInfo = "出现应用程序未处理的异常：" + DateTime.Now.ToString() + "\r\n";
                if (ex != null)
                {
                    str = string.Format(strDateInfo + "异常类型：{0}\r\n异常消息：{1}\r\n异常信息：{2}\r\n",
                    ex.GetType().Name, ex.Message, ex.StackTrace);
                }
                else
                {
                    str = string.Format("应用程序线程错误:{0}", ex);
                }
                MessageBox.Show(str, "系统错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                log.WriteLog(str);
            }
        }
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        static void Application_ThreadException(object sender, System.Threading.ThreadExceptionEventArgs e)
        {
            LogHepler log = new LogHepler();
            string str = "";
            string strDateInfo = "出现应用程序未处理的异常：" + DateTime.Now.ToString() + "\r\n";
            Exception error = e.Exception as Exception;
            if (error != null)
            {
                str = string.Format(strDateInfo + "异常类型：{0}\r\n异常消息：{1}\r\n异常信息：{2}\r\n",
                error.GetType().Name, error.Message, error.StackTrace);
            }
            else
            {
                str = string.Format("应用程序线程错误:{0}", e);
            }
            MessageBox.Show(error.Message, "系统错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
            log.WriteLog(str);
        }
        static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
        {
            LogHepler log = new LogHepler();
            string str = "";
            Exception error = e.ExceptionObject as Exception;
            string strDateInfo = "出现应用程序未处理的异常：" + DateTime.Now.ToString() + "\r\n";

            if (error != null)
            {
                str = string.Format(strDateInfo + "Application UnhandledException:{0};\n\r堆栈信息:{1}", error.Message, error.StackTrace);
            }
            else
            {
                str = string.Format("Application UnhandledError:{0}", e);
            }
            MessageBox.Show(error.Message, "系统错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
            log.WriteLog(str);
        }
        public class LogHepler
        {
            /// <summary>
            /// 锁对象
            /// </summary>
            private static object lockHelper = new object();
            /// <summary>
            /// 写error级别日志
            /// </summary>
            /// <param name="errorMessage">异常信息</param>
            /// <param name="ex">异常类</param>
            public void WriteErrorLog(string errorMessage, Exception ex)
            {
                string errorMsg = string.Empty;
                if (ex.InnerException != null)
                {
                    errorMsg = ex.InnerException.Message;
                }
                errorMsg = errorMsg + errorMessage + ex.StackTrace;
                WriteLog(errorMsg);
            }
            /// <summary>
            /// 写日志
            /// </summary>
            /// <param name="msg">日志信息</param>    
            public void WriteLog(string msg)
            {
                lock (lockHelper)
                {
                    string FilePath = string.Empty;
                    string AbsolutePath = AppDomain.CurrentDomain.SetupInformation.ApplicationBase + "Log";
                    if (!Directory.Exists(AbsolutePath))
                    {
                        Directory.CreateDirectory(AbsolutePath);
                    }
                    FilePath = AbsolutePath + "\\" + DateTime.Now.ToString("yyyyMMdd") + ".txt";
                    File.AppendAllText(FilePath, "\r\n" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "\r\n" + msg, Encoding.GetEncoding("gb2312"));

                }
            }
        }
    }
}