Translate control de servidor de validación from Spanish to English

– A server control, included with ASP.NET, that verifies user input. The input is checked as it comes from HTML server controls and Web server controls (for example, a Web page form) against programmer-defined requirements. Validation controls perform input checking in server code. If the user is working with a browser that supports DHTML, the validation controls can also perform validation using client script. ¹