为什么在Visual Studio中禁用某些工具? [英] Why are some tools disable in Visual Studio?

问题描述

大家好！

我正在使用Visual Studio2010.我还一起安装了Visual Studio 2010的Crystal Report.

问题是我在工具箱中看不到CrystalReportViewer控件. (它已在选择项目"中选择).

当我右键单击工具箱并选择全部显示"时，我看到CrystalReportViewer处于禁用模式.

-谁能告诉我为什么在工具箱中禁用了某些控件?
-以及如何启用它们?

hi every one!

I am using Visual Studio 2010. I also installed Crystal Report for Visual Studio 2010 together.

The problem is that I don''t see CrystalReportViewer control in toolbox. (It is already selected in Choose Item).

When I do right-click on toolbox and select "Shwo all", I see CrystalReportViewer in disable mode.

- Could any one tell me why some controls are disable in toolbox?
- And how to enable them?

Thanks!

推荐答案

将目标框架更改为.NET framework 4
http://www.vbforums.com/showthread.php?t=643511 [ ^ ]

Change target framework to .NET framework 4
http://www.vbforums.com/showthread.php?t=643511[^]

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