Problem with callbackEvent

[pinna_hari]

Hello, I am working with VS 2.0. i written code for dropdownlist filling using icallback event. when i use this event is working for dropdownlist. and in that page i had one button control when i click on button i am getting below error.

Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.

What may be the reason. Please Help me... Thanks Hari

Pinna

[Brij]

:zzz:

Cheers!! Brij

[pinna_hari]

what is this...give me the answer please

Pinna