Buenas,tengo 3 DDL y cada uno con updatepanel ajax en el 2do DDL hago click luego: 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."
cambie EnableEventValidation="false". y nada
hice el metodo ClientScript.RegisterForEventValidation en Render y nada
Alguien sabe que es eso.
Bendito Ajax
