Validation ASP.NET Controls

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 topics in this section describe the validation controls and how to use them.

For complete syntax information for Web server controls, see Web Server Control Syntax.

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

• Creating 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 Overview
  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.