Blazor Dropdown Tree Example - Form Validation
This sample demonstrates how to use the Dropdown Tree component inside an EditForm and validate using Data Annotations. Click Submit to validate the form.
In this demo, EditForm validates all data annotation rules using DataAnnotationsValidator.
Choose the value from the dropdown pop-up, and if the value is valid, then the given input will be ready to submit.
Otherwise, an error message will be shown until you choose a valid value.
In this demo, the field mapped to the Dropdown Tree component value is configured with the following rule.
| Field | Rule |
|---|---|
| Skills | The field must have a valid value and a minimum of two values. |
| Role | The field must have a valid value. |