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

Exporting to pdf from crystal reports stopped working

Posted on 2007-11-30
10
2,045 Views
Last Modified: 2013-12-16
I have a piece of code that was working fine and is all of a sudden throwing the following error

{Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack.}

on this line -- rd.ExportToHttpResponse(ExportFormatType.PortableDocFormat, context.Response, false, string.Empty);

rd is a ReportDocument.

this code was working fine. I do not know why it is throwing this error now! please help I need this solved!
public void ProcessRequest(HttpContext context)
    {
        ReportDocument rd = new ReportDocument();
        try
        {
            string path = context.Server.MapPath(ResolveUrl(GetReportPath()));
            rd.Load(path);
 
            if (GetIsODBC() == true)
            {
                string user = System.Configuration.ConfigurationManager.AppSettings["ReportUserName"];
                string password = System.Configuration.ConfigurationManager.AppSettings["ReportUserPassword"];
                rd.SetDatabaseLogon(user, password);
            }
            this.SetReportDataSources(context, rd); //set the data sources
 
            context.Response.Clear();
            rd.ExportToHttpResponse(ExportFormatType.PortableDocFormat, context.Response, false, string.Empty);
 
            context.Response.ContentType = "application/pdf";
            context.Response.Flush();
            context.Response.Close();
        }
        catch (Exception e)
        {
            context.Response.Clear();
            context.Response.Write(e.ToString());
            context.Response.Flush();
            context.Response.Close();
        }
        finally
        {
            rd.Close();
        }
    }

Open in new window

0
Comment
Question by:mattolan
10 Comments
 
LVL 21

Expert Comment

by:surajguptha
ID: 20384466
Check out this article if u havent done it already
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=268544&SiteID=1
0
 
LVL 4

Expert Comment

by:habibb
ID: 20393817
se if there is any error in your formulas used in rpt file. try to reinstall pdf.
verify your schecm on which report is designed.
0
 
LVL 2

Author Comment

by:mattolan
ID: 20396078
ok, I found the problem, not sure why this was a problem though. crystal must do something wierd that I'm unaware of.

I deleted the catch section of the try catch finally and all is good

catch (Exception e)
{
     context.Response.Clear();
     context.Response.Write(e.ToString());
     context.Response.Flush();
     context.Response.Close();
}

Open in new window

0
Space-Age Communications Transitions to DevOps

ViaSat, a global provider of satellite and wireless communications, securely connects businesses, governments, and organizations to the Internet. Learn how ViaSat’s Network Solutions Engineer, drove the transition from a traditional network support to a DevOps-centric model.

 
LVL 21

Expert Comment

by:surajguptha
ID: 20396136
wierd :)
0
 
LVL 21

Expert Comment

by:surajguptha
ID: 20396151
If u removed the catch block and if that fixed it, it means that it was going to the catch block before because of an exception and the catch which handled that exception threw your exception.
If you removed the catch, the original exception should have been thrown isnt it?
arghhh
0
 
LVL 2

Author Comment

by:mattolan
ID: 20396229
no, If I remove the catch, no exception is thrown. in fact the code works and I get the intended results!

arghhh is correct!
0
 
LVL 2

Accepted Solution

by:
mattolan earned 0 total points
ID: 20411757
it wasn't specifically the catch that was breaking it was the code inside the catch, crystal must have been messing with the Responce within its code (being a black box to me I don't really know what they are doing), and this must have been in conflict with my attempt to write to the reponce, because the below code on its own should not have caused me an issue
     context.Response.Clear();
     context.Response.Write(e.ToString());
     context.Response.Flush();
     context.Response.Close();

Open in new window

0
 
LVL 21

Expert Comment

by:surajguptha
ID: 20411871
May be its messin the response up... Thanks for letting me know :)
0
 
LVL 1

Expert Comment

by:modus_operandi
ID: 20437971
Closed, 500 points refunded.
modus_operandi
EE Moderator
0

Featured Post

Master Your Team's Linux and Cloud Stack

Come see why top tech companies like Mailchimp and Media Temple use Linux Academy to build their employee training programs.

Question has a verified solution.

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

In my previous two articles we discussed Binary Serialization (http://www.experts-exchange.com/A_4362.html) and XML Serialization (http://www.experts-exchange.com/A_4425.html). In this article we will try to know more about SOAP (Simple Object Acces…
There have always been a lot of questions related to when Crystal Reports evaluates report components (such as formulas, summaries, cross-tabs, charts, to name a few examples). Crystal Reports uses a two-pass reporting process to provide greater …
Two types of users will appreciate AOMEI Backupper Pro: 1 - Those with PCIe drives (and haven't found cloning software that works on them). 2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…
This video shows how to use Hyena, from SystemTools Software, to bulk import 100 user accounts from an external text file. View in 1080p for best video quality.

808 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