An important aspect of creating ASP.NET Web pages for user input is to be able to check that the information users enter is valid. ASP.NET provides a set of validation controls that provide an easy-to-use but powerful way to check for errors and, if necessary, display messages to the user.

The following topics tell you more about validation controls and how to use them.

In This Section

Validating User Input in ASP.NET Web Pages

What's New in Validation

Types of Validation for ASP.NET Server Controls

Specifying Validation Groups

Client-Side Validation for ASP.NET Server Controls

Special-Case Validation Results for ASP.NET Server Controls

Validation Error Message Layout for ASP.NET Server Controls

How to: Test Validity Programmatically for ASP.NET Server Controls

How to: Disable Validation for ASP.NET Server Controls

How to: Validate Programmatically for ASP.NET Server Controls

Related Sections

ASP.NET Web Pages: Provides information about how ASP.NET Web pages function and how to create and program them.

ASP.NET Web Server Controls: Provides information about how ASP.NET Web server controls work, how to add them to ASP.NET pages, and how to program them.

Script Exploits Overview: Provides information on guarding against malicious user input.