Crystal Reports问题.net 4 [英] Crystal Reports Problem with .net 4

问题描述

我之前在.net 3.5中使用过Crystal Reports，但是从升级到.Net 4.0后，我面临这个错误：

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：\Users\aligoglos\Documents\Visual Studio 2010\Projects\WPF\ReportTest\ ReportTest\CrystalReport1.cs 14 11 ReportTest

" Error 5 The type or namespace name 'CrystalDecisions' could not be found (are you missing a using directive or an assembly reference?) C:\Users\aligoglos\Documents\Visual Studio 2010\Projects\WPF\ReportTest\ReportTest\CrystalReport1.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.

感谢所有。

推荐答案

如果您有Visual Studio 2010的SAP Crystal Reports版本，您必须执行以下操作：

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Crystal Reports的PDF中获取了这些信息：

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

我希望这有助于。

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