C# WPF全局捕获异常 防止程序崩溃闪退

using System;using System.Collections.Generic;using System.Configuration;using System.Data;using System.Linq;using System.Threading.Tasks;using System.Windows;namespace ClearWord{    /// 
    /// App    /// 
    public partial class App : Application    {  protected override void OnStartup(StartupEventArgs e) {     RegisterEvents();     base.OnStartup(e); } private void RegisterEvents() {     //Task线程内未捕获异常处理事件     TaskScheduler.UnobservedTaskException += TaskScheduler_UnobservedTaskException;//Task异常      //UI线程未捕获异常处理事件（UI主线程）     this.DispatcherUnhandledException += App_DispatcherUnhandledException;     //非UI线程未捕获异常处理事件(例如自己创建的一个子线程)     AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException; } private static void TaskScheduler_UnobservedTaskException(object sender, UnobservedTaskExceptionEventArgs e) {     try     {  var exception = e.Exception as Exception;  if (exception != null)  {      HandleException(exception);  }     }     catch (Exception ex)     {  HandleException(ex);     }     finally     {  e.SetObserved();     } } //非UI线程未捕获异常处理事件(例如自己创建的一个子线程)private static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e) {     try     {  var exception = e.ExceptionObject as Exception;  if (exception != null)  {      HandleException(exception);  }     }     catch (Exception ex)     {  HandleException(ex);     }     finally     {  //ignore     } } //UI线程未捕获异常处理事件（UI主线程） private static void App_DispatcherUnhandledException(object sender, System.Windows.Threading.DispatcherUnhandledExceptionEventArgs e) {     try     {  HandleException(e.Exception);     }     catch (Exception ex)     {  HandleException(ex);     }     finally     {  e.Handled = true;     } } private static void HandleException(Exception ex) {     // MessageBox.Show("出错了，请与开发人员联系："+ ex.Message);     //记录日志     Utils.LogWrite(ex); }    }}

//Utils.LogWrite//读写锁，当资源处于写入模式时，其他线程写入需要等待本次写入结束之后才能继续写入private static readonly ReaderWriterLockSlim LogWriteLock = new ReaderWriterLockSlim();public static void LogWrite(Exception ex){    if (!Directory.Exists("Log"))    { Directory.CreateDirectory("Log");    }    var now = DateTime.Now;    var logpath = @"Log\" + now.Year + "" + now.Month + "" + now.Day + ".log";    var log = "\r\n----------------------" + DateTime.Now + " --------------------------\r\n"+ ex.Message+ "\r\n"+ ex.InnerException+ "\r\n"+ ex.StackTrace+ "\r\n----------------------footer--------------------------\r\n";    try    { //设置读写锁为写入模式独占资源，其他写入请求需要等待本次写入结束之后才能继续写入 LogWriteLock.EnterWriteLock(); File.AppendAllText(logpath, log);    }    finally    { //退出写入模式，释放资源占用 LogWriteLock.ExitWriteLock();    }}

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