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DevExtreme Data Editors provide a powerful and seamless way to perform data validation. In this demo, editors are collected in an HTML form. Each editor is accompanied by the Validator component validating the editor against a set of specified rules. Editors are validated each time their value is changed. All validation errors are displayed in the ValidationSummary component.

In the ASP.NET MVC demo, editors extract validation rules from data annotations attributed to the fields of the model (see the EditorsViewModel.cs file).

Note that the «Register» button here does not implement a usual onClick event handler. Instead, it has the useSubmitBehavior property set to true. This setting tells the button to validate and submit the HTML form in which it is nested, with no further configuration required.

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