The Validation Guidance Bundle has been released from Microsoft Patterns & Practices.
The Validation Guidance Bundle addresses how to improve UI responsiveness by
- Validating data server-side with ASP.NET validators
- Reusing property and entity business validation logic across screens, layers, and applications, and
- Guideliness for implementating validation and improving security.
Validation can take several forms including business rules validation, schema validation (length, range, format, type etc.), and malicious data filtering (SQL Injection, Cross-site scripting, etc.).
In an AJAX style application, there is an additional need to allow server side validation to be accessible from the browser in order to provide a more responsive user experience.
The ServerSideValidationExtender control included in this bundle allows server side ASP.NET Validators to be invoked from the client without requiring the page to be submitted, this is known as partial-postback. This extender can also be combined with the Property Proxy Validator included with the Enterprise Library Validation Application Block (VAB). This allows invoking VABValidators on the server without requiring the page to be submitted.
Learn more.