Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

error propagaton from atl to C# client

Posted on 2004-04-15
3
291 Views
Last Modified: 2012-08-13
We are in the process of converting ATL clients to C#.
However,I have not been able to make errors to get progated properly.
I have read that teh ATL component is reqired to support the ISupportErrorInfo interface for erro propagation to work.
Subsquently here is the point where error is raised from a ATL dll
else
{
CreateErrorInfo(&pErrorInfo);
            if(hSuccess)
            {
                  pErrorInfo->SetGUID(IID_IAirlineInfoObj);
                  pErrorInfo->SetDescription(SysAllocString(L"Data not found"));
                  IErrorInfo* _errInfo=NULL;
                  hSuccess=pErrorInfo->QueryInterface(IID_IErrorInfo,(void**)&_errInfo);
                  if(hSuccess)
                  {
                        SetErrorInfo(0,_errInfo);
                  }
            }
            return E_FAIL;
}
And the C# client tries to trap it as follows
catch(Exception e)
                  {
                           
                        Console.WriteLine( " The exception is {0}",System.Runtime.InteropServices.Marshal.GetHRForException(e));  
                  }
This does not work.How do i retrieve the data I had set on the IErrorInfo interface in the COM server?

0
Comment
Question by:ranadhir
3 Comments
 
LVL 10

Accepted Solution

by:
ptmcomp earned 25 total points
ID: 10846274
Catch(ComException e)
{
    Console.WriteLine( " The exception is {0}", e.ErrorCode);
}
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Why does my excel data start at B1 instead of A1. 9 91
SqlDataBase 7 53
C# Desktop Application 3 54
C# Linq - Join two objects into one 3 13
This article introduced a TextBox that supports transparent background.   Introduction TextBox is the most widely used control component in GUI design. Most GUI controls do not support transparent background and more or less do not have the…
Performance in games development is paramount: every microsecond counts to be able to do everything in less than 33ms (aiming at 16ms). C# foreach statement is one of the worst performance killers, and here I explain why.
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

860 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question