Blazor MultiSelect Dropdown Example - Form Validation

This example demonstrates MultiSelect integration within EditForm with Data Annotations validation for form submission.

Validation features:

• Type value in input element or choose from MultiSelect popup
• Validation enabled via EditForm and DataAnnotationsValidator
• Error messages display for validation rule violations
• Valid input ready for form submission

Validation rules applied:

• Required – Field must have valid value

Form validation triggers externally on submit action.