我的一个方法 (Method1) 产生一个新线程.该线程执行一个方法 (Method2) 并在执行期间抛出异常.我需要获取有关调用方法的异常信息 (Method1)
One of my method (Method1) spawns a new thread. That thread execute a method (Method2) and during exectution an exception is thrown. I need to get that exception information on the calling method (Method1)
有什么办法可以在 Method1 中捕获在 Method2 中抛出的异常?
Is there someway I can catch this exception in Method1 that is thrown in Method2?
推荐答案在 .NET 4 及更高版本中，您可以使用 Task 类而不是创建新的线.然后，您可以使用任务对象上的 .Exceptions 属性获取异常.有两种方法可以做到:
In .NET 4 and above, you can use Task<T> class instead of creating new thread. Then you can get exceptions using .Exceptions property on your task object. There are 2 ways to do it:
在一个单独的方法中://您在某个任务的线程 class Program { static void Main(string[] args) { Task<int> task = new Task<int>(Test); task.ContinueWith(ExceptionHandler, TaskContinuationOptions.OnlyOnFaulted); task.Start(); Console.ReadLine(); } static int Test() { throw new Exception(); } static void ExceptionHandler(Task<int> task) { var exception = task.Exception; Console.WriteLine(exception); } }
在相同的方法中://您在调用者线程中处理异常
class Program { static void Main(string[] args) { Task<int> task = new Task<int>(Test); task.Start(); try { task.Wait(); } catch (AggregateException ex) { Console.WriteLine(ex); } Console.ReadLine(); } static int Test() { throw new Exception(); } }注意你得到的异常是AggregateException.所有真正的异常都可以通过 ex.InnerExceptions 属性获得.
Note that the exception which you get is AggregateException. All real exceptions are availible through ex.InnerExceptions property.
在 .NET 3.5 中，您可以使用以下代码:
In .NET 3.5 you can use the following code:
//您在子线程 class Program { static void Main(string[] args) { Exception exception = null; Thread thread = new Thread(() => SafeExecute(() => Test(0, 0), Handler)); thread.Start(); Console.ReadLine(); } private static void Handler(Exception exception) { Console.WriteLine(exception); } private static void SafeExecute(Action test, Action<Exception> handler) { try { test.Invoke(); } catch (Exception ex) { Handler(ex); } } static void Test(int a, int b) { throw new Exception(); } }
或者//你在调用者线程中处理异常
class Program { static void Main(string[] args) { Exception exception = null; Thread thread = new Thread(() => SafeExecute(() => Test(0, 0), out exception)); thread.Start(); thread.Join(); Console.WriteLine(exception); Console.ReadLine(); } private static void SafeExecute(Action test, out Exception exception) { exception = null; try { test.Invoke(); } catch (Exception ex) { exception = ex; } } static void Test(int a, int b) { throw new Exception(); } }更多推荐
捕获在不同线程中抛出的异常
发布评论