C# WINFORM 捕获全局异常

using System;
using System.Collections.Generic;
using System.Windows.Forms;
using System.IO;
namespace GobalException
{
    static class Program
    {
        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main()
        {
            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);
                }


                writeLog(str);
                MessageBox.Show("发生致命错误，请及时联系作者！", "系统错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }

        }

        /// <summary>
        ///这就是我们要在发生未处理异常时处理的方法，我这是写出错详细信息到文本，如出错后弹出一个漂亮的出错提示窗体，给大家做个参考
        ///做法很多，可以是把出错详细信息记录到文本、数据库，发送出错邮件到作者信箱或出错后重新初始化等等
        ///这就是仁者见仁智者见智，大家自己做了。
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        static void Application_ThreadException(object sender, System.Threading.ThreadExceptionEventArgs e)
        {
           
            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);
            }

            writeLog(str);   
            MessageBox.Show("发生致命错误，请及时联系作者！", "系统错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }

        static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
        {
            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);
            }

            writeLog(str);
            MessageBox.Show("发生致命错误，请停止当前操作并及时联系作者！", "系统错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
        /// <summary>
        /// 写文件
        /// </summary>
        /// <param name="str"></param>
        static void writeLog(string str)
        {
            if (!Directory.Exists("ErrLog"))
            {
                Directory.CreateDirectory("ErrLog");
            }

            using (StreamWriter sw = new StreamWriter(@"ErrLog\ErrLog.txt", true))
            {
                sw.WriteLine(str);
                sw.WriteLine("---------------------------------------------------------");
                sw.Close();
            }
        }
    }
}

转自：http://www.cnblogs.com/kevinGao/archive/2011/11/02/2233420.html

还找到一个例子：
你好！
     一般使用Application的ThreadException事件，可以参考这个例子：
// Creates a class to throw the error.
public class ErrorHandler : System.Windows.Forms.Form {

    // Inserts the code to create a form with a button.

    // Programs the button to throw an exception when clicked.
    private void button1_Click(object sender, System.EventArgs e) {
       throw new ArgumentException("The parameter was invalid");
    }

    public static void Main(string[] args) {
       // Creates an instance of the methods that will handle the exception.
       CustomExceptionHandler eh = new CustomExceptionHandler();

       // Adds the event handler to to the event.
       Application.ThreadException += new ThreadExceptionEventHandler(eh.OnThreadException);

       // Runs the application.
       Application.Run(new ErrorHandler());
    }
}

// Creates a class to handle the exception event.
internal class CustomExceptionHandler {

    // Handles the exception event.
    public void OnThreadException(object sender, ThreadExceptionEventArgs t)
    {
       DialogResult result = DialogResult.Cancel;
       try
       {
          result = this.ShowThreadExceptionDialog(t.Exception);
       }
       catch
       {
          try
          {
             MessageBox.Show("Fatal Error", "Fatal Error", MessageBoxButtons.AbortRetryIgnore, MessageBoxIcon.Stop);
          }
          finally
          {
             Application.Exit();
          }
       }

       // Exits the program when the user clicks Abort.
       if (result == DialogResult.Abort)
          Application.Exit();
    }

    // Creates the error message and displays it.
    private DialogResult ShowThreadExceptionDialog(Exception e) {
       string errorMsg = "An error occurred please contact the adminstrator with the following information:\n\n";
       errorMsg = errorMsg + e.Message + "\n\nStack Trace:\n" + e.StackTrace;
       return MessageBox.Show(errorMsg, "Application Error", MessageBoxButtons.AbortRetryIgnore, MessageBoxIcon.Stop);
    }
}