1、直接在App.Xaml.cs里面重写OnStartup方法 具体代码如下
protected override void OnStartup(StartupEventArgs e){//在异常由应用程序引发但未进行处理时发生。UI线程//无法捕获多线程异常DispatcherUnhandledException += App_DispatcherUnhandledException;//专门捕获所有线程中的异常AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException;//专门捕获Task异常TaskScheduler.UnobservedTaskException += TaskScheduler_UnobservedTaskException;base.OnStartup(e);}private void TaskScheduler_UnobservedTaskException(object? sender, UnobservedTaskExceptionEventArgs e){MessageBox.Show(e.Exception.Message, "消息", MessageBoxButton.OK, MessageBoxImage.Error);e.SetObserved();// 获取完整异常信息string errorMessage = GetDetailedExceptionInfo(e.Exception);Log(errorMessage);}private void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e){MessageBox.Show((e.ExceptionObject as Exception).Message, "消息", MessageBoxButton.OK, MessageBoxImage.Error);// 获取完整异常信息string errorMessage = GetDetailedExceptionInfo(e.ExceptionObject as Exception);Log(errorMessage);}private void App_DispatcherUnhandledException(object sender, DispatcherUnhandledExceptionEventArgs e){e.Handled = true;MessageBox.Show(e.Exception.Message, "消息", MessageBoxButton.OK, MessageBoxImage.Error);// 获取完整异常信息string errorMessage = GetDetailedExceptionInfo(e.Exception);Log(errorMessage);}/// <summary>/// 获取异常的详细信息（包括堆栈跟踪和内部异常）/// </summary>private string GetDetailedExceptionInfo(Exception ex){var sb = new System.Text.StringBuilder();// 记录异常类型和消息sb.AppendLine($"异常类型: {ex.GetType().FullName}");sb.AppendLine($"异常消息: {ex.Message}");// 记录堆栈跟踪（去除多余空格）if (!string.IsNullOrEmpty(ex.StackTrace)){sb.AppendLine("堆栈跟踪:");sb.AppendLine(ex.StackTrace.Trim());}// 递归记录内部异常if (ex.InnerException != null){sb.AppendLine("\n--- 内部异常 ---");sb.AppendLine(GetDetailedExceptionInfo(ex.InnerException));}return sb.ToString();}/// <summary>/// 记录日志/// </summary>private void Log(string Mesgg){string fileName = $"{AppDomain.CurrentDomain.BaseDirectory}Log\\{DateTime.Now.ToString("yyyy-MM-dd")}";if (!Directory.Exists(fileName)){Directory.CreateDirectory(fileName);}File.AppendAllText($"{fileName}\\LogInformation.txt", $"{Mesgg}\r\n");// MessageBox.Show($"更新程序错误,具体错误信息查询:{fileName} 文件日志", "错误", System.Windows.MessageBoxButton.OK, System.Windows.MessageBoxImage.Error);}