WPF系列学习

1：WPF最小化到系统托盘

2：WPF程序单例运行

3：WPF中三种异常捕获：UI线程异常、非UI线程异常、Task线程异常

在窗体放一个按钮在单击事件执行如下代码来模拟。

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            //throw new InvalidOperationException("Something has gone wrong.");

            Thread t = new Thread(() => { throw new InvalidOperationException("Something has gone wrong."); });
            t.IsBackground = true;
            t.Start();

            //Task.Factory.StartNew(() => { throw new Exception("出错了"); });
        }

三种解决方案：

        private void App_Startup(object sender, StartupEventArgs e)
        {
            //处理UI线程异常
            DispatcherUnhandledException += App_DispatcherUnhandledException;
            //处理非UI线程异常
            AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException;
            //Task线程内异常
            TaskScheduler.UnobservedTaskException += TaskScheduler_UnobservedTaskException;
        }

        /// <summary>
        /// 捕获到UI线程异常
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void App_DispatcherUnhandledException(object sender, System.Windows.Threading.DispatcherUnhandledExceptionEventArgs e)
        {
            log.Exception("捕获到UI线程异常", e.Exception);

            e.Handled = true;//表示此异常已处理过
        }

        /// <summary>
        /// 捕获到非UI线程异常
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
        {
            if (e.IsTerminating)
            {
                log.Error(string.Format("捕获到非UI线程异常,并发生致命错误，导致程序即将终止，请联系运营商！{0}", e.ExceptionObject.ToString()));
                MessageBox.Show("发生致命错误，导致程序即将终止，请联系运营商！");
            }
            else
            {
                log.Error(string.Format("捕获到非UI线程异常 {0}", e.ExceptionObject.ToString()));
            }
        }

        /// <summary>
        /// 捕获到Task线程内异常
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void TaskScheduler_UnobservedTaskException(object sender, UnobservedTaskExceptionEventArgs e)
        {
            log.Exception("捕获到Task线程内异常", e.Exception);
            e.SetObserved();//设置该异常已察觉（这样处理后就不会引起程序崩溃）
        }

4：DataGrid 分页