ASP.NET in a Nutshell, 2nd Edition

CustomValidator | 743

MobileControls

Namespace

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Copyright © 2008 O’Reilly & Associates, Inc. All rights reserved.

Passed To

ItemPager.ItemPager( ), MobileControl.PaginateRecursive( )

CustomValidator

System.Web.UI.MobileControls (system.web.mobile.dll)

.NET 1.1, disposable

class

The CustomValidator control allows you to define your own validation routines. A similar

task could be performed by writing manual validation code in the click event for a

submit button, but using a CustomValidator allows you to create validation code that will

run any time the page is validated, and can provide a “vote” used for the MobilePage.

IsValid property along with all other validation controls. A CustomValidator can also be

easily reused to validate multiple controls.

To provide server-side validation, create an event handler for the ServerValidate event.

The string from the input control and the result of the validation is stored in the

provided System.Web.UI.WebControls.ServerValidateEventArgs object. In this way, the CompareVali-

dator works exactly the same as the System.Web.UI.WebControls.CustomValidator control, although

it doesn’t include the ability to define client-side validation logic using a JavaScript

function, because few mobile devices would support it.

Hierarchy

System.Object ➝ System.Web.UI.Control(System.ComponentModel.IComponent, System.

IDisposable, System.Web.UI.IParserAccessor, ...