网站项目评价,客户网站回访,建立网站的目的,wordpress单页主题汉化异常的捕获#xff1a; static void Main(string[] args){//继续我们的异步编程的使用嘀呀#xff1b;//关于主线程是无法捕获我们子线程中的异常滴滴啊#xff1b;var t DoExceptionAsync();t.Wait();Console.WriteLine(${nameof(t.Status)}: {t.Status}); …异常的捕获 static void Main(string[] args){//继续我们的异步编程的使用嘀呀//关于主线程是无法捕获我们子线程中的异常滴滴啊var t DoExceptionAsync();t.Wait();Console.WriteLine(${nameof(t.Status)}: {t.Status}); //任务状态Console.WriteLine(${nameof(t.IsCompleted)}: {t.IsCompleted}); //任务完成状态标识Console.WriteLine(${nameof(t.IsFaulted)}: {t.IsFaulted}); //任务是否有未处理的异常标识
Console.ReadLine();}private static async Task DoExceptionAsync(){try{await Task.Run(() { throw new Exception(); });}catch (Exception e){Console.WriteLine(${nameof(DoExceptionAsync)} 出现异常,异常时:{e.Message.ToString()});}}} 结果 也许你有疑问 但是因为任务没有被取消并且异常都已经处理完成 在调用方法中同步等待任务 算了这个太简单了有任务的等待也有任务的取消....... 代码 private static void Main(string[] args){var t CountCharactersAsync(http://www.cnblogs.com/liqingwen/);t.Wait(); //等待任务结束Console.WriteLine($Result is {t.Result});Console.Read();}/// summary/// 统计字符数量/// /summary/// param nameaddress/param/// returns/returnsprivate static async Taskint CountCharactersAsync(string address){var result await Task.Run(() new WebClient().DownloadStringTaskAsync(address));return result.Length;} 这里还有我们两个静态的方法可采用 Task 的两个静态方法 WaitAll() 和 WaitAny() 。 private static int time 0;static void Main(string[] args){var t1 CountCharactersAsync(http://www.cnblogs.com/liqingwen/,1);var t2 GetRandomAsyn(2);//Task 还以见数组地哦;Taskint[] tasks new Taskint[] {t1,t2};Task.WaitAll(tasks);//或则Task.WaitAny(tasks);
Console.WriteLine($t1.{nameof(t1.IsCompleted)}: {t1.IsCompleted});Console.WriteLine($t2.{nameof(t2.IsCompleted)}: {t2.IsCompleted});Console.ReadLine();}/// summary/// 统计字符数量/// /summary/// param nameaddress/param/// returns/returnsprivate static async Taskint CountCharactersAsync(string address,int id){var result await Task.Run(() new WebClient().DownloadStringTaskAsync(address));Console.WriteLine(${id} 已经调用完成);return result.Length;}//获取一个随机数private static async Taskint GetRandomAsyn(int id){var num await Task.Run(() {time;Thread.Sleep(time * 100);return new Random().Next();});Console.WriteLine(${id} 已经调用完成);return num;}} 在异步方法中异步等待任务 继续我们的异步编程之路........ class Program{private static int time 0;static void Main(string[] args){//继续我们的异步编程地呀var t GetRandomAsync();Console.WriteLine(mian line 1); //【注意】WhenAll() 异步等待集合内的 Task 都完成不会占用主线程的时间。Console.WriteLine($Result: {t.Result}); //但是这里会堵塞id呀Console.WriteLine(mian line 2);Console.Read();}private static async Taskint GetRandomAsync(){time;var t1 Task.Run((){Thread.Sleep(time* 600);return new Random().Next();});time;var t2 Task.Run(() {Thread.Sleep(time*600);return new Random().Next();});//这里开启了两个异步的任务await Task.WhenAll(new ListTaskint() { t1, t2 }); //【注意】WhenAll() 异步等待集合内的 Task 都完成不会占用主线程的时间。// await Task.WhenAny(new ListTaskint() { t1, t2 });
Console.WriteLine($ t1.{nameof(t1.IsCompleted)}: {t1.IsCompleted} );Console.WriteLine($ t2.{nameof(t2.IsCompleted)}{t2.IsCompleted } );return t1.Result t2.Result; //这个就返回了 我们想要的基本值滴呀
}} 结果 如果该成whenAny的结果 ps以上结果是有不确定性呀你懂滴哦 Task.Delay() 暂停执行 这个其实是Thread.sleep的一种取代方法地呀 private static void Main(string[] args){Console.WriteLine(${nameof(Main)} - start.);DoAsync();Console.WriteLine(${nameof(Main)} - end.);Console.Read();}private static async void DoAsync(){Console.WriteLine($ {nameof(DoAsync)} - start.);await Task.Delay(500);Console.WriteLine($ {nameof(DoAsync)} - end.);} 结果哦 转载于:https://www.cnblogs.com/mc67/p/6256705.html
