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Editorial Team
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Asked: 2026-06-11T20:05:59+00:00

I am using Visual Studio 2010 and this morning the Project Components in my

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I am using Visual Studio 2010 and this morning the Project Components in my project disappeared. That is in the toolbox, I cannot add any more objects from the classes I defined. And I have errors for the existing elements using theses classes: there are not defined.

Here is how it looked before and after. The first Component Category is now gone.

Before and after that the Project Components disappeared

My main problem comes from the PageControl element. I now have the error “The type “Wolf_Calc.PageControl” could not be found.”

Where could this come from?

I suspect the problem to come from DropBox that I use to sync and backup my project files. Some errors appeared with non-ASCII names, such as Gebäude.vb being rename Geb”ude.vb… But all characters in the PageControl Component are ASCII (not true for the other components)

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1 Answer

  1. Editorial Team

    After further research, I tried the accepted answer of another post.

    For whatever reason could Visual Studio not find the class definition. But moving the class into the main program and compiling it solved my problem.

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