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Note

Optimizely Forms is supported by MVC-based websites only.

## EPiServer.Form.Core

This release implements a feature request to support validation of multiple elements at once.

• When a visitor clicks **Submit** and has JavaScript enabled, all elements are validated at once (except CAPTCHA, because it needs server-side validation).

• In non-JS mode, all elements are validated at once. New behaviors in this release:

  • Validation messages displayed on each failed element

  • Input data on the forms is not cleared

• On server side, this function:

  Text

  

  processes all elements at once, and returns the array of `ValidationInfo`.

## Breaking changes in Forms 4.0

Interface `IValidationService`:

• `ValidateFormData(NameValueCollection formData, out ValidationInfo validationFailInfo)` is marked with [Obsolete].

• Add `ValidateFormData(NameValueCollection formData, out IEnumerable<ValidationInfo> validationFailInfo)`.