Web Forms :: Modifying One Controls Object From Another Control?

Mar 17, 2010

I have two user controls (wishlist & shopping cart) The shopping cart & wishlist objects are both in sessions.Also both controls are sitting inside the masterpage and the wishlist has the ability to move an item to the shopping cart. Now how do i achieve this? Originally i thought i would expose a public method within shopping cart called "BindItems" which would rebind the datacontrol, however this is causing .NET's automatic postback validation to throw an exception.

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.I dont want to set EnableEventValidation to false either for security reasons.

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Description:
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[Code]....

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