Crystal .NET Tips
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Published: 30 Oct 2003
Unedited - Community Contributed
This article covers several tips picked up from various mailing lists on Crystal .NET.
by Eric Landes
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In the past few months I have noticed some recurring themes on the Crystal .NET mailing list that had relatively quick answers. So I have compiled the questions, along with links or answers in this one place. These tips should be helpful for all who are using Crystal .NET with Visual Studio .NET. Hope this helps, and keep on coding!
  1. When I export to from a web file to a pdf file, the quality is poor. Are there any solutions?
    1. It could be a registry key on the server. Check out this article on Crystal Decisions support site for more info. article (c2010317).
  2. Usual Error Description: Exception Details: System.NullReferenceException: Object reference not set to an instance of an object
    1. Check your registry for this key:
    2. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W3SVC\Parameters\Virtual Roots/CrystalReportWebFormViewer If it is not there, it must be set!
    3. Value example: C:\Program Files\Microsoft Visual Studio .NET\Crystal Reports\Viewers\,,20
  3. Error message is something like: Parser Error Message: Can not access file 'CrystalInfoStoreLib' because it is being used by another process.
    1. Josh Peters on the (now defunct) .NET Crystal Reports mailing list (but there is an active Crystal list on suggested this method. You need the files Managed.msm, Database_Access.msm, regwiz.msm and Database_Access_enu.msm found in C:\Program Files\Common Files\Merge Modules. Create a web setup project in your solution, and then add the merge files. Do this by right clicking on the Web setup project and selecting Add/Merge Modules, then select these files. On the regwiz.msm file, right click and select properties. Under the keycode, enter the number sent to you when you registered with Crystal Decisions. Run the setup program on your server, and this should eliminate the problem.
  4. Having problems logging onto multiple sub reports.
    1. Wolfgang Baeck on the old .NET Crystal Reports mailing list found the fix to this issue. Click here for the code.

    I'll be adding to other tips article as time goes on. Happily programming, this is your corporate coder!

    Eric Landes, your Corporate Coder

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Crystal Alliance

User Comments

Title: unresolved errors   
Name: john
Date: 2005-03-19 4:41:29 AM
i have found an exception on compiling a report using dot net and C#
Exception Details: CrystalDecisions.CrystalReports.Engine.LogOnException: Logon failed.
Title: New to Crystal report   
Name: sam
Date: 2004-10-05 2:22:06 AM
I am absolutely new to Crystal reports. Hence this article did not serve my cause.
This is what we are currently doing.
We have a stored proc ready. This sp we execute every time in production and get the information. We import the whole into an Excel file and then modify it as per the need of different customers. But now we want to automate it by the help of crystal reports. Can I expect some help in this regard. Thank you
Title: Unresolved Error   
Name: Hie
Date: 2004-06-24 5:53:14 AM
i have found an exception on compiling a report using dot net and C#
Exception Details: CrystalDecisions.CrystalReports.Engine.LogOnException: Logon failed.

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