(The default for this page, if implemented, would be e-mail confirmation.) By default, the Web Forms page automatically validates that malicious users are not attempting to send script to your application even if you do not use validation controls. For information about the difference between these Web project types, see text box can be converted to a date value. The first is the custom validation code that runs when the page is submitted.Existing tools can validate any particular instance of the XHTML generated from the document.Howevere there is no tool for validating the document itself, guaranteeing that all instances that might be generated are valid.Finally, you will learn how you can validate user input conditionally, depending on choices that the user makes in a page.
In the walkthrough, you will create a page for a Web site that allows visitors to request a reservation.
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, Math ML, etc.
Validating webpages comments