.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
Gaurav Pal
Post New Web Links

Handling external C++ exceptions

Posted By:      Posted Date: August 21, 2010    Points: 0   Category :ASP.Net

Hi. I'm working in a application that uses an external .Dll developed in C++ language. According the business rule, the .Dll can throws one exception if it found a error. My question is if it's possible handle or catch a exception throwed by the C++ dll? The try/catch doesn't works. Bellow there's the code I'm using to call the C++ dll.

        public extern static IntPtr LoadLibrary(string lpLibFileName);

        [DllImport("kernel32", CharSet = CharSet.Ansi)]
        public extern static IntPtr GetProcAddress(IntPtr hLibModule, string procName);

        public extern static bool FreeLibrary(IntPtr hLibModule);

        private delegate void DllMethodCallBack(string param1, string param2);

        public void CallDllMethod(string param1, string param2)

View Complete Post

More Related Resource Links

CLR Inside Out: Handling Corrupted State Exceptions


There's a danger in using one-size-fits-all exception handling, and you need to know how to avoid it by being as specific as possible about how you handle errors.

Andrew Pardoe

MSDN Magazine February 2009

.NET Exceptions: Make the Transition from Traditional Visual Basic Error Handling to the Object-Orie


If you're used to Visual Basic 6.0 and you're making the transition to Microsoft .NET, you will find that error handling is quite different from what you've used for years. Visual Basic .NET uses a more object-oriented solution to signaling and responding to unexpected problems while your program is running. This approach, called structured exception handling, has a number of advantages over the On Error statements provided in previous versions of Visual Basic. For instance, exceptions give you lots more information about exactly what went wrong in your app. To help you take advantage of this modern error handling paradigm, this article will show you how to raise and respond to exceptions, as well as how to create your own custom exception classes.

Jesse Liberty

MSDN Magazine November 2002

BCS Handling external content types programmatically



1. How do I programmatically get the names and info on all the LOB external content types that I created on a SP server with SPD?

2. Can I programmatically copy an external content types to another server (which also have BCS installed)?

Thanks in advance



Every self-respected programmer should include exception handling techniques. Sometimes your application will generate an error. Regardless of who was responsible for this error, the programmer or the user, it is up to the first to include the necessary exception handling techniques to keep his/her program from crashing. The .Net environment provides useful techniques for avoiding disastrous errors such as try-catch statements and user-defined exceptions.

Global Exception Handling with ASP.NET

After your global exception handler has done its work, you'll want to redirect the users of your website to a friendly page that tells them that something has gone wrong, and then provide them with customer support information as well as a link back to your web application's home page.

How to get more information about the exceptions that can happen in SharePoint 2010 projects?

In case there is an exception anywhere in the SharePoint 2010 project (most common place an exception would happen is during deployment of your SharePoint project, custom deployment configuration or custom deployment steps), there's a registry key EnableDiagnostics available for you to use.

SQL Server 2005 Try and Catch Exception Handling

I'm pretty excited to see that there is some real error handling for T-SQL code in SQL Server 2005. It's pretty painful to have your wonderfully architected .NET solution tainted by less-than-VBScript error handling for stored procedures in the database. The big difference being the addition of TRY..CATCH blocks. Let's take a look:

Handling 404 page not found with Error page



      How do i handle 404 page not found?

Error while using exception handling block el 4.1


Hi Folks,


i am trying to use tyhe exception handling block of Enterprise library 4.1.


I just createda polisy and used IndexOutOfRangeException and added a replace handler and a logging handler to it.

I am using the NotifyRethrow PostHandlingAction to the exception.


During runtime I am getting an exception on the HandleException event, The exception is added below:



Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

Line 42:             catch (Exception ex)
Line 43:             {
Line 44:                 bool reThrow = ExceptionPolicy.HandleException(ex, "ReplacePolicy");
Line 45:         

Session handling


I am beginner to asp.net. I wanna set up a login page in ASP.NET. I dont like to use ASP.NET's own Login facilities.. I wanna use session object..How will I block visiting "user page" by clicking the back button of the browser after successfull logout 


Pls help me..

.NET Matters: Aggregating Exceptions


Exceptions in .NET are the fundamental mechanism by which errors and other exceptional conditions are communicated. This month's column provides information about how to aggregate exceptions to help manage a variety of scenarios in which multiple exceptions might result from one operation, including scenarios involving parallelism and concurrency.

Stephen Toub

MSDN Magazine August 2009

Foundations: Error Handling In Workflows


Workflows often define long-running processes and an unhandled failure usually means termination. Avoid this scenario by handling exceptions properly.

Matt Milner

MSDN Magazine February 2009

.NET Matters: Handling Messages in Console Apps


Many developers who use the Microsoft .NET Framework think that application type is tied to the libraries that can be used in that application. Stephen Toub clarifies.

Stephen Toub

MSDN Magazine June 2007

Bugslayer: Minidumps for Specific Exceptions


This installment of Bugslayer covers the use of ADPlus to create a minidump of your Microsoft .NET Framework 2.0 pro¬cesses on specific exceptions.

John Robbins

MSDN Magazine November 2006

Data Points: SQL Server 2005 XML Support, Exception Handling, and More


SQL Server 2005 includes several important improvements to the Transact-SQL (T-SQL) language. One added feature is a new kind of trigger that fires when data definition language (DDL) statements run.

John Papa

MSDN Magazine May 2006

Bugslayer: Unhandled Exceptions and Tracing in the .NET Framework 2.0


By now, you've certainly heard about the big changes coming in Visual Studio® 2005, but when it's time to move your code over it will be the small things that trip you up. In this column, I want to cover two of the many excellent changes that you could easily overlook as you make the move to the new runtime and development tools.

John Robbins

MSDN Magazine July 2005

Data Points: Handling Data Concurrency Using ADO.NET, Part 2


Enterprise development has been moving towards a discon-nected model in recent years and ADO. NET development is no exception. While the disconnected model of the ADO. NET DataSet offers great flexibility, that adaptability also means looser control over data updates than you get with a connected data access model.

John Papa

MSDN Magazine October 2004

ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend