exception-handling

问题 My teacher has asked me to write a program in C# to handle "Array type mismatch exception". But i couldn't find anything in the net related to that. I just want to confirm if there exists something like that. 回答1: ArrayTypeMismatchException on MSDN 回答2: Let’s say Class2 derives from Class1, because C# language is covariant when it comes to assigning arrays following assignment is perfectly valid Class1[] generalizedArray; Class2[] specializedArray = new Class2[]{new Class2(),new Class2()};

问题 I know that this question has been asked a lot, but none of the solutions seem to work for me. That or I am just incompetent and need to have my hand held through this problem (most likely solution). I looked through all of the classes, and all the build actions are set to compile, so I have no idea what could have gone wrong. Any help? Additional Details: I have been coding the starting of a game, and everything was going good until I got this error: Program does not contain a static 'Main'

问题 I have a method that looks like this: try { doStuff(); } catch (Exception ex) { logger.error(ex); } (I don't really use method names like doStuff - this is just to make things easy) In doStuff I do a variety of things, among them is call a data access method (so, another method within doStuff) that ends with the following: } catch (SQLException ex) { logger.error(ex); } finally { try { connection.close(); proc.close(); results.close(); } catch (Exception e) { logger.error(e); } //<--Exception

问题 As a follow-up to my previous question: If I change the code as follows: struct ExceptionBase : virtual std::exception{}; struct SomeSpecificError : virtual ExceptionBase{}; struct SomeOtherError : virtual ExceptionBase{}; void MightThrow(); void HandleException(); void ReportError(); int main() { try { MightThrow(); } catch( ... ) { HandleException(); } } void MightThrow() { throw SomeSpecificError(); } void HandleException() { try { throw; } catch( ExceptionBase const & ) { // common error

问题 when i run my application i get the following error: Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at javax.swing.text.FlowView$FlowStrategy.layoutRow(FlowView.java:546) at javax.swing.text.FlowView$FlowStrategy.layout(FlowView.java:460) at javax.swing.text.FlowView.layout(FlowView.java:184) at javax.swing.text.BoxView.setSize(BoxView.java:380) at javax.swing.text.BoxView.updateChildSizes(BoxView.java:349) at javax.swing.text.BoxView.setSpanOnAxis(BoxView.java:331) at

问题 This is a follow-up question of the post. Please see the end of this question for a definition of "function try block". Question: If a function try block does not "handle" the exception raised in the constructor, why do we need them after all? Could you give an example taking advantage of function try block? Considering the following code. #include <iostream> #include <new> #include <exception> using namespace std; struct X { int *p; X() try : p(new int[10000000000]) {} catch (bad_alloc &e) {

问题 I've just started learning about PureScript effects, and I'm stuck trying to make a function that has an EXCEPTION effect. lengthGt5 :: forall eff. String -> Eff (err :: EXCEPTION | eff) String lengthGt5 a = if (length a <= 5) then throwException $ error "Word is not the right length!" else a main = do word <- catchException handleShortWord (lengthGt5 "test") log word where handleShortWord err = do log (message err) return "Defaut::casserole" When I try and run this I get the following error

问题 I have a series of methods that call wcf services and all of them have the same try catch code Response Method1(Request request) { Response response = null; using(ChannelFactory<IService1> factory = new ChannelFactory<IService1>(myEndpoint)) { IService1 channel = factory.CreateChannel(); try { response = channel.Operation(request); } catch(CommunicationException ex) { // Handle Exception } catch(TimeoutException ex) { // Handle Exception } catch(Exception ex) { // Handle Exception } } return

问题 What happens when a fault occurs during the SEH stack unwinding on Windows? For example, if the unwind info is corrupted or incorrect, or the stack has been overwritten with invalid data, and a GP fault occurs during the unwind process? Is the diagnostic dialog still presented to the user or is there a different behavior in this case? 来源： https://stackoverflow.com/questions/45335145/what-happens-when-a-fault-occurs-during-stack-unwinding-on-windows

问题 I am about to give up debugging SMTP servers to send email... My code is the following SmtpClient mailClient = new SmtpClient("plus.smtp.mail.yahoo.com", 465); mailClient.EnableSsl = true; MailMessage message = new MailMessage(); message.To.Add("aditya15417@hotmail.com"); message.Subject = "permias-tucson-contact-us"; mailClient.Credentials = new NetworkCredential("myemail@yahoo.com", "mypassword"); MailAddress fromAddress = new MailAddress(Email.Text, Name.Text); message.From = fromAddress;