Hi. I have some Component descendants in my class library. I don't want them to appear in the toolbox and choose item dialog if user manages to add them manually. ToolboxItem(false) attribute does not help in this situation. Are there any ways to accomplish this (attributes, custom ToolboxItem descendants)?

Thanks.

Apply this attribute:

[DesignTimeVisible(false)]

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Hans Passant.

Apply this attribute:

[DesignTimeVisible(false)]

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Hans Passant.

Thanks for this solution. The only drawback is that toolbox item is still created, and only after component is dropped on the designer surface nothing happens (that's quite good for me). It would be nice if there is any way not to create the toolbox item for specified component at all.

Hmm, I don't repro that.  I don't see a toolbox item at all with that attribute in place.  Did you intentionally add it to the toolbox?

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Hans Passant.

The case is when class library is distributed as an assembly, not as source files in the solution. And yes, the original question is about suppressing components to be shown in toolbox when user intentionally tries to add components from my assembly to toolbox.