问题描述
我之前在 .net 3.5 中使用过 Crystal Reports,但自从升级到 .Net 4.0 后,我遇到了这个错误:
I've worked with Crystal Reports in .net 3.5 before, but since upgrading to .Net 4.0 I'm facing this error:
" 错误 5 找不到类型或命名空间名称CrystalDecisions"(您是否缺少 using 指令或程序集引用?) C:UsersaligoglosDocumentsVisual Studio 2010ProjectsWPFReportTest报告测试CrystalReport1.cs 14 11 报告测试"
" Error 5 The type or namespace name 'CrystalDecisions' could not be found (are you missing a using directive or an assembly reference?) C:UsersaligoglosDocumentsVisual Studio 2010ProjectsWPFReportTestReportTestCrystalReport1.cs 14 11 ReportTest "
我为 Visual Studio 2010 安装了 Crystal Reports,但我的错误仍未解决.
I installed Crystal Reports for Visual Studio 2010, but my error is still unresolved.
谢谢大家.
推荐答案
如果您有 SAP Crystal Reports,Visual Studio 2010 版本,您需要执行以下操作:
If you have SAP Crystal Reports, version for Visual Studio 2010, here's what you have to do:
在 Microsoft .NET Framework 4.0 中使用 ADO.NET 时,必须将以下设置添加到应用程序的配置文件中:
When using ADO.NET with the Microsoft .NET Framework 4.0, the following setting must be added to the application’s configuration file:
<configuration>
<startup useLegacyV2RuntimeActivationPolicy="true">
<supportedRuntime version="v4.0"/>
</startup>
</configuration>
我从这里的 Crystal Reports 上的 PDF 中获得了这些信息:
I got this information from a PDF on Crystal Reports from here:
http://www.sdn.sap.com/irj/sdn/index?rid=/library/uuid/e06b8953-a62b-2d10-38b9-ca71f747e2b1&utm_source=crvs2010&utm_medium=lp&utm_campaign=supp_platforms
我希望这会有所帮助.
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