Solved

writing crystal report to reponse using ExportToHttpResponse only works with server.transfer

Posted on 2010-09-03
3
1,903 Views
Last Modified: 2012-08-14
Hi all,
Im trying to show a crystal report in pdf format in the browser but something very odd is going on and i cant work out why.

I have a page which lists reports (Reports.aspx)
I found the code below to generate a report in PDF format.
This code works fine when i have the code in a button click event in Reports.aspx.

People want the report in a different page so they can view a report,go back,choose another, go back etc..
So I created a new page (GenerateReport.aspx) put the code in page_load and did a reponse.redirect to GenerateReport.aspx in the button click event instead.
For some reason this doesnt work anymore! It just shows a blank screen.

I tried the code in page_load of the Reports.aspx page and it wont work either.
Even odder, if i change the Response.Redirect to Server.Transfer() it works!

I thought I could get away with Server.Transfer but users are closing the report window or clicking back and getting taken to the wrong page because Server.Transfer doesnt do a new request. Ive no idea why it works one way and not the other!
Has any one any ideas at all?
Thanks!!

IList<ReportData> myData = GetReportData();
CrystalReport1 myCrystalReport = new CrystalReport1();
myCrystalReport.SetDataSource(myData);

Response.Buffer = false;
Response.ClearContent();
Response.ClearHeaders();
myCrystalReport.ExportToHttpResponse(ExportFormatType.PortableDocFormat, Response, false, "ExportedReport");

Open in new window

0
Comment
Question by:enterpriseireland
[X]
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
  • 2
3 Comments
 
LVL 5

Accepted Solution

by:
JayFromPep earned 250 total points
ID: 33618293
Server.Transfer works because it is passing the entire object, whereas Response.Redirect, redirects the user, leaving behind all of the stuff on the page you are leaving, unless you explicitly pass stuff forward.

so the myCrystalReport is killed on response.redirect, but lives on in Server.Transfer

Try passing the myCrystalReport into the Response.Redirect as a parameter and see if you can work with it that way.
0
 

Author Comment

by:enterpriseireland
ID: 33858290
I gave up on this.  I just had to do a fudge in the end. thanks for the help.
0
 

Author Closing Comment

by:enterpriseireland
ID: 33858296
wasnt full answer but was a good try :)
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone 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
IEnumerable<T> to a List<T> 8 66
VS 2015 is giving [No relevant source lines] 2 47
What are MicroServices? 4 67
How do I "share" on social sites? 2 38
User art_snob (http://www.experts-exchange.com/M_6114203.html) encountered strange behavior of Android Web browser on his Mobile Web site. It took a while to find the true cause. It happens so, that the Android Web browser (at least up to OS ver. 2.…
International Data Corporation (IDC) prognosticates that before the current the year gets over disbursing on IT framework products to be sent in cloud environs will be $37.1B.
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 …
This video shows how to use Hyena, from SystemTools Software, to update 100 user accounts from an external text file. View in 1080p for best video quality.

734 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