exception

Python - Possible to force raise exceptions regardless try/except blocks?

In Python is there any language (or interpreter) feature to force the python interpreter to always raise exceptions even if the exception offending code is inside a try/except block ? I've just inherited a larger and old codebase written in python, whose purpose is to communicate with some custom designed hardware we also developed. Ma...

What does an "Unable to validate data" exception in System.Web.Configuration.MachineKeySection.GetDecodedData indicate

I've developed a website testing on localhost Cassini and it has always run fine, now when I deploy to my webserver I intermittently get the following error: Global.Application_Error Error: Exception occurred during request: http://....blah.aspx Unable to validate data. at System.Web.Configuration.MachineKeySection.GetDecodedData(Byt...

Need to override Http Response Code from asmx web service

My web sevices support flex/flash clients and, upon unhandeld exceptions, throw custom faults that extend System.ServiceModel.FaultException. I have been informed that flex/flash can't read these custom faults if the the http response code is different from 200. This is documented as flex/flash bug: http://bugs.adobe.com/jira/browse/SD...

In delphi 7, is `try ... except raise; end;` meaningful at all?

In some Delphi 7 code I am maintaining, I've noticed a lot of instances of the following: with ADOQuery1 do begin // .. fill out sql.text, etc try execSQL; except raise; end; end; It seems to me that these try blocks could be removed, since they do nothing. However, I am wary of possible subtle side-effects.. Can any...

Google code contacts importer

Hi, I have created a JSP which is supposed to fecth contact list from GMAIL, i have added all the required jar file in class path, Here is teh library which i am using http://code.google.com/p/contactlistimporter/ Bellow is my code, <%@ page import="com.xdatasystem.contactsimporter.*" %> <%@ page import="com.xdatasystem.user.*" %> ...

Generic GDI+ error with ThreadExceptionDialog in stack trace

We received some hard to reproduce error reports. The users gets the "An error occurred. The application will now exit." message box and then the app exits. In Main() I write the exception to a log file: System.Runtime.InteropServices.ExternalException: A generic error occurred in GDI+. at System.Drawing.Image.FromHbitmap(IntPtr hbitma...

.NET WPF MissingMethodException when launching new thread

I have a WPF application with a form that, when started, invokes a custom method in a new thread. Private Sub TestStep1_Loaded(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs) Handles Me.Loaded Dim oThread As New Thread(AddressOf DisplayNextPicture) oThread.Start() End Sub Private Sub DisplayNextPicture() ...

Handling ObjectDisposedException and similar exceptions during the process shutdown?

My application generally running on 10-20 threads and these threads sending events to the GUI to the update certain controls almost every seconds. When the user close the application middle of these, all updates related with these events causes several random crashes. Mostly ObjectDisposedException and NullReferenceException. Since the...

Throwing exceptions from constructors

Im having a debate with a co-worker about throwing exceptions from constructors, and thought I would like some feedback. Is it ok to throw exceptions from constructors, form a design point of view? Lets say I'm wrapping a posix mutex in a class, it would look something like this. class Mutex { public: Mutex() { if(pthread_mutex_...

How do I log unhandled exceptions in ASP.NET MVC?

Here's what I'm trying to do in my Global.asax.vb: Public Class MvcApplication Inherits System.Web.HttpApplication Shared Sub RegisterRoutes(ByVal routes As RouteCollection) routes.IgnoreRoute("{resource}.axd/{*pathInfo}") routes.MapRoute( _ "Error", _ "error.html", _ New With...

Error Handling in ASP.NET MVC

How can I correctly handle exceptions thrown from controllers in ASP.NET MVC? The HandleError attribute seems to only process exceptions thrown by the MVC infrastructure and not exceptions thrown by my own code. Using this web.config <customErrors mode="On"> <error statusCode="401" redirect="/Errors/Http401" /> </customErrors> ...

C# Contract Implementations and Exceptions

I have a BO method that must do two operations to fulfill its contract. insert a record into the db send an email notification containing the metadata for the record Both are handled with calls to individual DAO methods responsible for completing the action. I do not trap exceptions in my DAO, I handle and publish them in the BO. T...

what could be causing this rails ioerror closed stream?

I have a rails application, running in development mode ( with a sqlite database ). The application's purpose is to allow users to upload files through a java client. If a user wants to upload a folder, all the files inside it will be recursively uploaded. If a user wants to upload a file, the file will be uploaded normally. Here's t...

Delphi - How to re-enable a debugger exception notification?

I opened a project (created in D2007/08) in D2009 and it would compile but throw tons of exceptions when executed. Strange thing, but I know the project's a mess, so I want to go ahead and fix it. Well, not really fix all of it, just make it work would be enough. When I ran it, I got some Debugger Exception Notification (the little mess...

How do I handle exceptions when using threading and Queue?

If I have a program that uses threading and Queue, how do I get exceptions to stop execution? Here is an example program, which is not possible to stop with ctrl-c (basically ripped from the python docs). from threading import Thread from Queue import Queue from time import sleep def do_work(item): sleep(0.5) print "working" , ...

Using single RMI Registry

Hi I've been using RMI for a project I am currently working on and I want to bind from multiple hosts to a single RMI registry. However when I attempt to do so I get an error saying java.rmi.AccessException: Registry.Registry.bind disallowed; origin / 192.168.0.9 is non-local host I did so googling and it seems that RMI stops remote...

Where can I get great documentation about Exception handling in C#

Hi guys, I'm searching for a good website or a books that give great example of Exception Handling in C# 2008 such as SQL exception management and all the other. I'm programming in 3 tiers. I'm already doing it well in VB .Net 2008 and I'm now moving foward to C#. The transition isn't hard, but I need a bit more information about excep...

What's a good way for a c# dll to return error to the calling application?

Hi guys, i'm writing a dll which is a wrapper to a access database. and i'm pretty new to c# in general as my background is in web development LAMP with perl, i'm not sure what's a good way to return error to a calling app in case they pass the wrong parameters to my functions or what not. I have no idea as of now except to probably do ...

Not Serializable Exception

i am trying to create a mock shopping cart for a uni project. im using two java classes Item and shoppingCart, shopping cart uses a vector to store Items and then writes them to a file. i am trying to use the classes on a jsp page but when i try to write to the file i get an java.io.WriteAbortedException: writing aborted; java.io.NotSeri...

Why does the code execution never enter the catch block (java)?

I am trying to throw a (custom) ImportException from the method importUsers in class UserHelper. I can see in the debugger that the throw clause is executed, but the method, from which the importUsers method is called, never catches the exception. Here is the method, where the exception is thrown: public static AccessorValidator impor...