RDLC 报表项消失

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在使用Visual Studio 2008的RDLC报表时，遇到工具箱中的报表项（如文本框、图表、表格等）在设计状态下消失的问题。尝试打补丁和重装VS无效。解决方案是删除隐藏文件夹C:Documents and SettingsMYUSERNAMELocal SettingsApplication DataMicrosoftVisualStudio9.0中的四个隐藏文件（toolbox.tbd、toolbox_reset.tbd、toolboxIndex.tbd、toolboxIndex_reset.tbd），这些文件是工具箱的缓存，删除后会自动生成，问题得到解决。此外，若用户控件也消失，可通过VS菜单：工具 -> 选项 -> Windows Form Designer -> General，将“AutoToolboxPopulate”设置为“True”来修复。

今天碰到一件很奇怪的事情，

Visual studio 2008 RDLC报表在设计状态时，工具箱中的报表项（文本框、折线图、表、子报表等）竟然消失了，打补丁，重装VS都没有解决，最后解决办法如下：

http://stackoverflow.com/questions/799934/toolbox-issue-for-rdlc-in-design-mode-vs2008

fixed this by going into my profile as follows:

C:\Documents and Settings\MYUSERNAME\Local Settings\Application Data\Microsoft\VisualStudio\9.0

toolbox.tbd
toolbox_reset.tbd
toolboxIndex.tbd
toolboxIndex_reset.tbd

There are four HIDDEN files in there that make up what is apparently the toolbox cache. If you erase them, they will be re-generated and #13119 will go back to General. As I said, these files appear to be hidden so configure the file explorer accordingly.

Second problem: my User controls disappeared from the toolbox.
I was able to fix it by going into the VS menus:

Visual Studio "Tools" menu

"Options" submenu

"Windows Form Designer" tab "General" tab Set "AutoToolboxPopulate" to "True"