CheckBoxList
CheckBoxList presents options as a group of checkboxes; users can check multiple options — the most intuitive multi-select control.

Specific Settings
List Collection
One option per line:
Email newsletter
SMS notifications
Phone callback
Postal mailDirection
- Vertical: options stacked vertically (default).

- Horizontal: options laid out horizontally.

Column
The number of columns to display; valid only when Horizontal is selected.
Default Value
Pre-checked options; separate multiple values with commas, and all must exist in List Collection:
Email newsletter,SMS notificationsWidth
The control width (pixels or percent).
Mandatory Validation
Check Required so at least one option must be checked.
Use Cases
- Interests, skills and other multi-selects
- Subscription channel selection
- A moderate number of options needing intuitive multi-select
Next Steps
- RadioButtonList — the single-select version
- Field Types Overview