You can add your widgets to the Toolbox in 3 ways:
- Manually, by editing the ToolboxesConfig.config file (it is located inside ~/App_Data/Sitefinity/Configuration/)
- Programmatically (fire the code on Initialize or just inside a default .aspx page
- By using Sitefinity Thunder.
I'd suggest to take the last approach. Install Sitefinity Thunder inside your project (download it from here
). You can then take a look at the Thunder documentation
on how to use Thunder to add widgets to your toolbox.
Widgets can be UserControls, or Custom controls and I think when you have 3.7 experience you can easily continue to use the UserControl approach, although designers work a bit different.