Question regarding printing crystal reports using printDocument

Posted on 2004-08-17
Last Modified: 2008-01-09
Im currently developing a print report winform application that will print a crystal report without using the crystal reports viewer and the printdialog component in c# winform. Iam retrieving the data of the crystal report (line per line) using the printpage event in order for it to be a printDocument. Im enabling it to be used in the print preview dialog and pagesetup dialog. However, whenever i do this, it returns unreadable ASCII characters in the print document.

Are there any ways for me to convert these characters into a a readable one?

Question by:Keeshan
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
  • 4
  • 2
LVL 42

Expert Comment

ID: 11819863
I assume these unreadable characters are formatting and positioning elements - you could probably do a search & replace to get rid of them or convert them to something harmless like a (space) char, etc.
LVL 100

Expert Comment

ID: 11819903
What file are you reading?  How are you creating that file?


Author Comment

ID: 11826832
Im reading a rpt Crystal Reports file.initially i get the file using a filestream and assigned it in a streamreader, then read it in the printpage event for print previewing, page setup, and printing.

to Frodoman: do you know the ways on how to search and replace that characters and convert them into readable codes?
On Demand Webinar - Networking for the Cloud Era

This webinar discusses:
-Common barriers companies experience when moving to the cloud
-How SD-WAN changes the way we look at networks
-Best practices customers should employ moving forward with cloud migration
-What happens behind the scenes of SteelConnect’s one-click button

LVL 42

Expert Comment

ID: 11827065
You'll have to first identify the characters - which may take a little effort.  I don't code c# but most languages have some variation of a "replace" function that typically looks something like this:  targetString = Replace( sourceString, searchText, replaceText )

For example in vb to replace a line-break control character with a space character the code would be: targetString = Replace( sourceString, chr(10), " ")

LVL 42

Expert Comment

ID: 11827069
By the way, have you considering that instead of trying to read the .rpt file you may want to export the output of the report to a different format (.txt or .csv perhaps) and then use those as the source for your filestream?  I suspect this would give you a much cleaner file to work with...

Author Comment

ID: 11827170
I already tried to export the rpt file into a different format but still produced wrong data. i also tried your solution regarding the way replacing, but the problem is that the data generated by the report is retrieved from dbase. in this case, i dont know if that code is an equivalent for a space,char, etc.. and i dont even know what kind of ascii char it prints.. do you get my pt? :D thanks!

Another alternative im trying to do is to make use of the reportDocument of the crystal report. But i cant convert it into a printdocument in order for it to be used in printpreview and page setup dialogs in c#.. is it possible to convert reportDocument into a printDocument?
LVL 42

Accepted Solution

frodoman earned 125 total points
ID: 11829575
>>> in this case, i dont know if that code is an equivalent for a space,char, etc.. and i dont even know what kind of ascii char it prints.. do you get my pt?

As I said, you'd have to identify the characters to be replaced which will take some effort.  Probably you'll have to read from the stream and dump the ascii value of each character and examine them manually to identify the non-printing values for replacement.

If that doesn't work you may need to read the report as a binary stream and then decided on a byte-by-byte basis which values to discard and which to convert to ascii for display.

It's possible to do because there are 3rd party viewers out there that obviously can parse .rpt files.  I don't expect that it's an easy undertaking however and you're unlikely to find much in the way of documentation to help you.


Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

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

I hate sub reports and always consider them the last resort in any reporting solution.  The negative effect on performance and maintainability is just not worth the easy ride they give the report writer.  Nine times out of ten reporting requirements…
Hot fix for .Net Crystal Reports 10.2.3600.0 to fix problems with sub reports running on 64 bit operating systems ISSUE: Reports which contain subreports fail with error "Missing Parameter Value" DEPLOYMENT SERVER OS: Windows 2008 with 64 bi…
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 …
Are you ready to implement Active Directory best practices without reading 300+ pages? You're in luck. In this webinar hosted by Skyport Systems, you gain insight into Microsoft's latest comprehensive guide, with tips on the best and easiest way…

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