Assembly: System.Web (in system.web.dll)
Property ValueThe collection of validation controls.
You can use this property to manipulate the methods and properties of the ValidatorCollection object associated with the current Page instance. This collection contains all the validation server controls that are contained in a page.
Calling the Page.Validate method causes validation logic to be executed for each validation server control in the current validation group. If any of these controls do not pass, the Page.IsValid property returns false.
For more information on validation controls, see Validation ASP.NET Controls.