C Thread Error Handling
Contents |
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings python thread error handling and policies of this site About Us Learn more about Stack Overflow
C# Thread Exception Handling
the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags objective c error handling Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only c error handling goto takes a minute: Sign up Catching exceptions caused in different threads [duplicate] up vote 2 down vote favorite This question already has an answer here: Catching unhandled exception on separate threads 2 answers The below example is a simplification of my problem. An exception is thrown within a new thread. If im not handling this within the thread it is
C# Error Handling In Constructor
not caught by the outer try/catch and crashes my application. Is there any way to guarantee that I catch any exception that occurs. try { new Thread(delegate() { throw new Exception("Bleh"); // <--- This is not caught }).Start(); } catch (Exception ex) { MessageBox.Show(ex.ToString()); } c# multithreading exception-handling thread-safety share|improve this question asked Jun 25 '13 at 13:10 CathalMF 3,85321541 marked as duplicate by mbeckish, Paul Annetts, chollida, Ben Carey, khr055 Jun 25 '13 at 15:32 This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question. add a comment| 4 Answers 4 active oldest votes up vote 5 down vote accepted Generally speaking, it's easiest to catch the exceptions within the thread itself. But if you want to catch the exception separately from the thread function itself (and if you can use Task instead of the old Thread approach), you can write code like this: var task = Task.Factory.StartNew(() => { throw new Exception("Test"); }); task.ContinueWith(t => handleException(t.Exception), TaskContinuationOptions.OnlyOnFaulted); This uses ContinueWith() to call a
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and c# error handling get line number policies of this site About Us Learn more about Stack Overflow the c# error handling framework company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags
C# Error Handling Techniques
Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only http://stackoverflow.com/questions/17298269/catching-exceptions-caused-in-different-threads takes a minute: Sign up How can I propagate exceptions between threads? up vote 68 down vote favorite 26 We have a function which a single thread calls into (we name this the main thread). Within the body of the function we spawn multiple worker threads to do CPU intensive work, wait for all threads to finish, then return the result http://stackoverflow.com/questions/233127/how-can-i-propagate-exceptions-between-threads on the main thread. The result is that the caller can use the function naively, and internally it'll make use of multiple cores. All good so far.. The problem we have is dealing with exceptions. We don't want exceptions on the worker threads to crash the application. We want the caller to the function to be able to catch them on the main thread. We must catch exceptions on the worker threads and propagate them across to the main thread to have them continue unwinding from there. How can we do this? The best I can think of is: Catch a whole variety of exceptions on our worker threads (std::exception and a few of our own ones). Record the type and message of the exception. Have a corresponding switch statement on the main thread which rethrows exceptions of whatever type was recorded on the worker thread. This has the obvious disadvantage of only supporting a limited set of exception types, and would need modification whenever new exception types were added. c++ multithreading exception share|improve this question asked Oct 24 '08 at
resources Windows Server 2012 resources Programs MSDN subscriptions Overview Benefits Administrators Students Microsoft Imagine Microsoft Student Partners ISV Startups TechRewards Events Community https://msdn.microsoft.com/en-us/library/system.windows.forms.application.threadexception(v=vs.110).aspx Magazine Forums Blogs Channel 9 Documentation APIs and reference Dev centers Retired content Samples We’re sorry. The content you requested has been removed. You’ll be auto redirected in 1 second. System.Windows.Forms Application Class Application Events Application Events ThreadException Event ThreadException Event ThreadException Event ApplicationExit Event EnterThreadModal Event Idle Event LeaveThreadModal Event ThreadException Event ThreadExit error handling Event TOC Collapse the table of content Expand the table of content This documentation is archived and is not being maintained. This documentation is archived and is not being maintained. Application.ThreadException Event .NET Framework (current version) Other Versions Visual Studio 2010 .NET Framework 4 Visual Studio 2008 .NET Framework 3.5 .NET Framework 3.0 c# error handling .NET Framework 2.0 .NET Framework 1.1 Occurs when an untrapped thread exception is thrown.Namespace: System.Windows.FormsAssembly: System.Windows.Forms (in System.Windows.Forms.dll)Syntax C#C++F#VB Copy public static event ThreadExceptionEventHandler ThreadException RemarksThis event allows your Windows Forms application to handle otherwise unhandled exceptions that occur in Windows Forms threads. Attach your event handlers to the ThreadException event to deal with these exceptions, which will leave your application in an unknown state. Where possible, exceptions should be handled by a structured exception handling block.You can change whether this callback is used for unhandled Windows Forms thread exceptions by setting SetUnhandledExceptionMode. To catch exceptions that occur in threads not created and owned by Windows Forms, use the UnhandledException event handler. Note To guarantee that no activations of this event are missed, you must attach a handler before you call Application.Run.Caution Because this is a static event, you must detach your event handlers when your application is disposed, or memory leaks will result.ExamplesThe following code example se