ASP.NET AJAX CascadingDropDown

Is there any way to use the ASP.NET AJAX CascadingDropDown controls WITHOUT setting EnableEventValidation to false?  I've searched exhaustively, but haven't found anything.
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Edwin_CConnect With a Mentor Commented:
I am afraid there is no way because the content of the dropdown control is altered by the extender at clientside. From the perspective of the server, the content of the dropdown is different after postback.  Hence the builtin security mechanism of ASP.NET returns error.  It seems the only way is to disable the error check mechanism (i.e. disable EnableEventValidation).
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