ASP.NET 4 Unleashed

Overview of the Validation Controls

ASP.NET 4 includes six validation controls:

• RequiredFieldValidator— Enables you to require a user to enter a value in a form field.

• RangeValidator— Enables you to check whether a value falls between a certain minimum and maximum value.

• CompareValidator— Enables you to compare a value against another value or perform a data type check.

• RegularExpressionValidator— Enables you to compare a value against a regular expression.

• CustomValidator— Enables you to perform custom validation.

• ValidationSummary— Enables you to display a summary of all validation errors in a page.

You can associate the validation controls with any form controls included in ASP.NET Framework. For example, if you want to require ...