BlipFace.App.Dispatcher_UnhandledException C# (CSharp) Method

        void Dispatcher_UnhandledException(object sender, System.Windows.Threading.DispatcherUnhandledExceptionEventArgs e)
        {
            StringBuilder message = new StringBuilder(200);
            message.Append("Nieoczekiwany błąd aplikacji\n ");
            message.Append(e.Exception.Message);
            message.Append("\n");
            if (e.Exception.InnerException != null)
            {
                message.Append(e.Exception.InnerException.Message);
                message.Append("\n");

            }

            MessageBox.Show(message.ToString());
            e.Handled = true;
        }