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Form Field Checkbox Group
A pre-composed form field that wraps a CheckboxGroup control with automatic label, helper text, and error message display. Inherits from FormFieldBase, which provides EditContext integration, auto-generated control IDs, ARIA attribute wiring, and validation error state management.
Default
A basic
FormFieldCheckboxGroup with a label, helper text, and two-way binding via @bind-Values. The component automatically generates a unique ID to associate the label with the group for accessibility.
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With Select All
Set
ShowSelectAll to true to display a "Select All" checkbox above the group items. Use SelectAllLabel to customize its label text.
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With Error
Use
ErrorText to manually set a validation error. Click Validate to trigger the error when no topics are selected.
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Disabled
Set
Disabled to true to prevent user interaction. All checkboxes in the group display with reduced opacity.
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EditForm Validation
Inside an
EditForm, validation errors from DataAnnotationsValidator display automatically. Try submitting without selecting any topics.
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