You can restore the Toolbox to its default state after making changes. Doing so has no effect on control instances that have already been placed on a form.
Before restoring the Toolbox, back up the project's toolbox.xml file if you want to save the customized configuration.
To restore the Toolbox to its default state, right-click in the Toolbox and select Reset Toolbox from the context menu.
Note: The Reset Toolbox command is disabled if the project includes references to any out-of-date assembly versions. This helps prevent the possibility of a version conflict between the controls available in the Toolbox and the controls in use in the project.
