【图表区FAQ】水晶报表Crystal Reports 常见问题解答索引
待整理。

欢迎大家跟帖提供，可以使代码文字，也可以使链接。
我将整理到主贴中。







本帖不回答提问，请注意秩序，谢谢。

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参考
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占楼学习！
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最好分们别类的整理
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最好有实例可以参考 模仿
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1.Printcontrol.dll failed to register on install.
Issue
So, you are trying to install Report Viewer, and you get the message that printcontroll.dll failed to register, and at the same time, the whole install fails.
Resolution
Your computer does not have the Microsoft C Runtime Library, a collection of low level functions that most programs require. To install the software successfully, you need to find a copy of msvcr70.dll and msvcr71.dll, or msvcr80.dll. Google might be able to help you with that. Get those files, and copy them into the C:\\Window\system32\ folder, and the program will install without issue.
2.Report Viewer Won't Load Reports
Issue
The Report Viewer installs the Crystal Reports runtime to run reports. It is reported that if you install another report viewer, from another company, it will install another Crystal Reports runtime package. This may be an older, out-of-date, install, or one that is not compatible with the Report Viewer from ReportViewer.biz. When you then try to run a report with ReportViewer.biz, the report may not load, giving an error message that says, "Report failed to load."
Resolution
Uninstalling the competing software, and reinstalling the Report Viewer from ReportViewer.biz should solve this issue.
3."Toggle Parameter Panel" does not work. Shows blank parameters.
Issue
The "Toggle Parameter Panel" does not show parameters. Parameters are still shown when report is refreshed.
Resolution
The "Toggle Parameter Panel" is a new feature of Crystal Reports 2008. If your report was not created using Crystal Reports 2008, then this feature will not show parameters in the toggle panel. Your reports will still run with our software. Your parameters are still in the report, will show when you refresh, and are available to formulas. If you would like to take advantage of the "Toggle Parameter Panel," then you must build your reports with Crystal Reports 2008.

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4."Failed to open the connection" message box is shown on report open or refresh.
You try to open or refresh data on a report, and get a message box simular to the following message:Failed to open the connection
Resolution
Make sure you computer has access to the data sources required by the report. If the connection is not an ODBC connection, make sure the check box on the front of the Report Viewer that says, "Use Report Settings," is checked and the data source connection has the same name on the computer as it does in the report. If it is an ODBC connection, and it does not have the same exact name as the connection set in the report, then, before you open the report, uncheck the check box that says, "Use Report Settings," and select the connection that should be used from the list of connections.