exception-handling

问题 I have a service named WcfService2 (original i know) which has an IService.cs file with a public interface: namespace WcfService2 { [ServiceContract] public interface IService1 { [OperationContract] [WebGet(UriTemplate = "/{value}")] string GetData(string value); } } I then have my public class Service1.svc.cs file which returns a string for the value like so: namespace WcfService2 { public class Service1 : IService1 { public string GetData(string value) { return string.Format("You entered:

问题 I am experiencing a very tricky defect in my WPF application to track down. The error message is: An infinite loop appears to have resulted from repeatedly invalidating the TimeManager during the Layout/Render process. The stack trace (for what it's worth) is: at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget) at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget) at System.Windows.Threading.ExceptionWrapper

问题 I want to protect our login actions by AntiforgeryToken attribute - I know why the exception from the topic occurs, however I can't seem to find any good solution for it. Let say we have the following situations: It's 8:00 AM, application users are coming to work, they sit down and starting the login process - right now it is very possible that some of the users will get the same ValidationToken . After the first one logs in - all other will see the above exception (or some other custom

问题 try: import MySQLdb # some action except ImportError as err: # fallback code PyCharm gives a code inspection warning on that: 'MySQLdb' in try block with 'except ImportError' should also be defined in except block This inspection detects names that should resolve but don't. Due to dynamic dispatch and duck typing, this is possible in a limited but useful number of cases. Top-level and class-level items are supported better than instance items. Ok, I thought the warning is reasonable, because

问题 I am using tweepy to handle a large twitter stream (following 4,000+ accounts). The more accounts that I add to the stream, the more likely I am to get this error: Traceback (most recent call last): File "myscript.py", line 2103, in <module> main() File "myscript.py", line 2091, in main twitter_stream.filter(follow=USERS_TO_FOLLOW_STRING_LIST, stall_warnings=True) File "C:\Python27\lib\site-packages\tweepy\streaming.py", line 445, in filter self._start(async) File "C:\Python27\lib\site

问题 I am writing a script which checks for a registry value and and exits if is 0. (It will proceed if the value is 1.) if ((Get-ItemProperty -path HKLM:\SOFTWARE\ICT\LoginScript).proceed -eq 0) { $form.close() exit } When I run the script with the reg value at 0, it fails to exit and throws an exception instead: System.Management.Automation.ExitException: System error. at System.Management.Automation.FlowControlNode.Execute(Array input, Pipe outputPipe, ExecutionContext context) at System

问题 I am attempting to build an application using WPF and the MVVM pattern. I have my Views being populated from my ViewModel purely through databinding. I want to have a central place to handle all exceptions which occur in my application so I can notify the user and log the error appropriately. I know about Dispatcher.UnhandledException but this does not do the job as exception that occur during databinding are logged to the output windows. Because my View is databound to my ViewModel the

问题 I m using ... tmpLst = (from e in App.lstAllChilds where e.Id == Id select e).ToList(); where lstAllChilds is the list, which contains some corrupted data as well. So now i m tying to handle Try-Catch block inside this query. Please help. 回答1: Here is the simplest change you can make to simply exclude items which are null or are raising an exception. tmpLst = App.lstAllChilds.Where(e => { try { return e != null && e.Id == Id; } catch { return false; } }).ToList(); But in my opinion you

问题 I've come across the fact that catching RuntimeException is generally considered bad practice because they can't be corrected and usually are programmer errors. However, we have an (insanely) large application where changes in any part can have unforeseen consequences (Yes, this a problem in and of itself) . Now the idea has come up to start catching and logging RuntimeExceptions at the application's top level so we can be more efficient in fixing such bleed issues as they come up. Like every

问题 The following code will give a hard fail when run under Windows 7 32bit: void CTestView::OnDraw(CDC* /*pDC*/) { *(int*)0 = 0; // Crash CTestDoc* pDoc = GetDocument(); ASSERT_VALID(pDoc); if (!pDoc) return; // TODO: add draw code for native data here } However, if I try this on Windows 7 64bit, I just get this in the output window: First-chance exception at 0x13929384 in Test.exe: 0xC0000005: Access violation writing location 0x00000000. First-chance exception at 0x77c6ee42 in Test.exe: