exception

问题 I came across this dead end while trying to replace exceptions with either monad in c#. Which leads me to think maybe it is not only language specific problem and more technique related missing feature. Let me try to re-explain it more globally: Given: I have a 3rd party function( a function that is imported into my code and I have no access to) which receives a lazy list (c# IEnumerable,f# Seq...) and consume it I Want: To apply a function (LINQ select,map...) on the method's lazy list

问题 Im writing a unit test for a c# class, One of my tests should cause the method to throw an exception when the data is added. How can i use my unit test to confirm that the exception has been thrown? 回答1: It depends on what unit test framework you're using. In all cases you could do something like: [Test] public void MakeItGoBang() { Foo foo = new Foo(); try { foo.Bang(); Assert.Fail("Expected exception"); } catch (BangException) { // Expected } } In some frameworks there's an attribute you

问题 I am trying to work with the ExpectedException attribute in a C# UnitTest , but I am having issues getting it to work with my particular Exception . Here's what I got: NOTE: I wrapped asterisks around the line that is giving me the trouble. [ExpectedException(typeof(Exception))] public void TestSetCellContentsTwo() { // Create a new Spreadsheet instance for this test: SpreadSheet = new Spreadsheet(); // If name is null then an InvalidNameException should be thrown. Assert that the correct //

问题 I have a class with number of methods and want to have one exception handler for them all. There are so many of these methods and they have different parameters, that it would be ugly to write try/catch for each of them. Do you maybe know a way where I can do it with having a one in class exception handler, which will handle them all. UPDATE: Many of you ask me why. The reason is that I am calling a data source with various methods. so my class has functions getData1, gedData2, getData3

问题 I have a class with number of methods and want to have one exception handler for them all. There are so many of these methods and they have different parameters, that it would be ugly to write try/catch for each of them. Do you maybe know a way where I can do it with having a one in class exception handler, which will handle them all. UPDATE: Many of you ask me why. The reason is that I am calling a data source with various methods. so my class has functions getData1, gedData2, getData3

问题 Ours is a J2EE app, using Struts-EJB-Hibernate on Websphere 6.1 over Mainframe/DB2 backend, that was recently moved to production. We are getting stale connection exception when the user login to the application first time or some times this exception occurs intermittently. on the second try the user able to log in to the application. The exact error message i am getting is empcom.ibm.websphere.ce.cm.StaleConnectionException: Execution failed due to a distribution protocol error that caused

问题 Ours is a J2EE app, using Struts-EJB-Hibernate on Websphere 6.1 over Mainframe/DB2 backend, that was recently moved to production. We are getting stale connection exception when the user login to the application first time or some times this exception occurs intermittently. on the second try the user able to log in to the application. The exact error message i am getting is empcom.ibm.websphere.ce.cm.StaleConnectionException: Execution failed due to a distribution protocol error that caused

问题 Ours is a J2EE app, using Struts-EJB-Hibernate on Websphere 6.1 over Mainframe/DB2 backend, that was recently moved to production. We are getting stale connection exception when the user login to the application first time or some times this exception occurs intermittently. on the second try the user able to log in to the application. The exact error message i am getting is empcom.ibm.websphere.ce.cm.StaleConnectionException: Execution failed due to a distribution protocol error that caused

问题 Duplicate of: In C#, how can I rethrow InnerException without losing stack trace? I have some operations that I invoke asynchronously on a background thread. Sometimes, things go bad. When this happens, I tend to get a TargetInvocationException, which, while appropriate, is quite useless. What I really need is the TargetInvocationException's InnerException, like this: try { ReturnValue = myFunctionCall.Invoke(Target, Parameters); } catch (TargetInvocationException err) { throw err

问题 Duplicate of: In C#, how can I rethrow InnerException without losing stack trace? I have some operations that I invoke asynchronously on a background thread. Sometimes, things go bad. When this happens, I tend to get a TargetInvocationException, which, while appropriate, is quite useless. What I really need is the TargetInvocationException's InnerException, like this: try { ReturnValue = myFunctionCall.Invoke(Target, Parameters); } catch (TargetInvocationException err) { throw err