Getting "Invalid postback or callback argument" error.Hi Coders,
I have one textbox in which I am entering person name following that i am adding Region, Country, Area for that person. I am binding this Region, Country, Area cascading dropdowns at client side using Ajax call web method, but when i am trying to save this record i am getting error-
Invalid post back 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 post back or callback data for validation.
if any one have idea please help me.
Thanks in advance.