exception

ExecuteXmlReader and null Resultset Throws TargetInvocationException

I'm calling a stored procedure on a SQL Server 2005 database which returns an XML resultset. Sometimes it will return an null resultset becuase there are not rows to return. When this happens athe ExecuteXmlReader method throws a TargetInvocationException. This seems to be a known issue (see: http://social.msdn.microsoft.com/Forums/en-US...

about c++ exceptions. func() throw()

i am reading this page http://www.cplusplus.com/doc/tutorial/exceptions.html it says if i write function() throw(); no exceptions can be thrown in that function. I tried in msvc 2005 writing throw(), throw(int), throw() and nothing at all. each had the exact same results. Nothing. I threw int, char*, another type and it was all caught th...

How to pop up alert when HTTP connection fails on iPhone?

I want to write some code to handle exceptions when HTTP connection fails. I use the following codes: -(void) connection:(NSURLConnection *)connection didFailWithError: (NSError *)error { UIAlertView *errorAlert = [[UIAlertView alloc] initWithTitle: [error localizedDescription] message: [error localizedFailureReaso...

Web service cast exception why?!

Error Cannot implicitly convert type 'string[]' to 'System.Collections.Generic.List<string>' The above error is caused when I call a method to a web service List<string> bob = myService.GetAllList(); Where: GetAllList = [WebMethod] public List<string> GetAllList() { List<string> list .... r...

Question about HTTP exception handling on iPhone

I try to add a method to handle exception, but the program just crashes instead of pop up an AlertView. 1) I set up the connection: -(void)connect:(NSString *)strURL { NSURLRequest *theRequest=[NSURLRequest requestWithURL:[NSURL URLWithString:strURL] cachePolicy:NSURLRequestUseProtocolCachePolicy ...

ASP.NET MVC Unhandled Exceptions on Images?

I haven't been able to replicate the exception when I browse my site... but I found out about this through my event logger (it emails my cell phone when an unhandled exception occurs). Here's the exception: The controller for path '/Content/UsrImg/ImageFileName.jpg' could not be found or it does not implement IController. Wh...

Best way to handle a KeyNotFoundException

I am using a dictionary to perform lookups for a program I am working on. I run a bunch of keys through the dictionary, and I expect some keys to not have a value. I catch the KeyNotFoundException right where it occurs, and absorb it. All other exceptions will propagate to the top. Is this the best way to handle this? Or should I us...

Java exception handling idioms ... who's right and how to handle it?

I currently have a technical point of difference with an acquaintance. In a nutshell, it's the difference between these two basic styles of Java exception handling: Option 1 (mine): try { ... } catch (OneKindOfException) { ... } catch (AnotherKind) { ... } catch (AThirdKind) { ... } Option 2 (his): try { ... } catch (AppException e)...

Best way to check whether a certain exception type was the cause (of a cause, etc ...) in a nested exception?

I am writing some JUnit tests that verify that an exception of type MyCustomException is thrown. However, this exception is wrapped in other exceptions a number of times, e.g. in an InvocationTargetException, which in turn is wrapped in a RuntimeException. What's the best way to determine whether MyCustomException somehow caused the exc...

SqlClient.SqlException occurs during Database Fail Over

I have two Microsoft SQL 2005 databases setup in a fail over scenario. The application connection strings have the "Failover Partner" specified in the connection string. When the currently live database fails over to the slave database, there is a small time period that a user can obtain a SqlClient.SqlException with the message "An ex...

The case against checked exceptions

For a number of years now I have been unable to get a decent answer to the following question: why are some developers so against checked exceptions. I have had numerous conversations, read things on blog, read what Bruce Eckel had to say (the first person I saw speak out against them). I am currently writing some new code and paying...

Catching Ironpython Exception in C#

I'm embedding IronPython 2.0 in c#. In IronPython I defined my own exception with: def foobarException(Exception): pass and raise it somewhere with: raise foobarException( "This is the Exception Message" ) now in c# I have: try { callIronPython(); } catch (Exception e) { // How can I determine here the name (foobarException...

PHP: Checking if a directory contains a Zend_Search_Lucene index

I am looking for a reliable way to check to see if a directory contains a Zend_Search_Lucene index. Currently, the only way I have managed to work this out is to check the contents of an exception returned to me using the following code: <?php try { $newIndex = Zend_Search_Lucene::open( $luceneDir ); } catch ( Zend_Search_Lucene_Exc...

Exception wrapper for Carbon C app in OSX

How can I efficiently catch and handle segmentation faults from C in an OSX Carbon application? Background: I am making an OSX Carbon application. I must call a library function from a third party. Because of threading issues, the function can occasionally crash, usually because it's updating itself from one thread, and it's got some in...

Is this an attempt to break my ASP.Net site's security?

I am fairly new to ASP.NET. I recently set up automated email from my website to notify me of an unhandled exceptions. Just a few hours ago in 3 minutes there were 10 unhandled exceptions and all stack traces were similar. There is a lot in the error messages I do not understand, but I do not like the way this looks. Here is one of the...

C++ (Standard) Exceptions and Unicode

I'm running into an issue where I'm processing unicode strings and I want to do some error reporting with standard exceptions. The error messages contained in standard exceptions are not unicode. Usually that hasn't been a problem for me because I can define the error message in non-unicode and have enough information, but in this case...

How do I catch system-level exceptions in Linux C++?

The following catch() is not called: void test(void) { int i=1,j=0,k; try { k = i/j; } catch(...) { ...handle it... } } Is there a way to catch this kind of exception? ...

Does FCL already have an exception meaning method execution fail ?

I have my own exception, which been throwing on execution fail of a method (p/invoke in my case). public PInvokeException(string methodName) : base(String.Format(CultureInfo.CurrentCulture, "An error occured while external method '{0}' call", methodName)) { } But I want to replace it with already existing. Is there in FCL something li...

Missing StackTrace Information

I seem to be missing some information from my stack trace, here is what i'm getting: at Foo.Bar(DataTable table) in D:\Foo\Bar\authoring\App_Code\FooBar.vb:line 87 Where is the rest of the stack trace infomation? EDIT: Custom errors in the Web.Config is set to off, i'm handling the error where it's caught like this: Catch ex As Ex...

Function-wide exception handling in c++ - is it a bad style?

There is a try-catch thing about functions, which I think sometimes may be quite useful: bool function() try { //do something } catch(exception_type & t) { //do something } So the first part of the question: is this style considered bad in general case? And the concrete example I used this approach in: We had project with q...