Hi,
I have an app in C# VS 2008 which is done for 2 clients. A user comes in, picks a client from a dropdown and enters the app. When I am testing the production site, everything works fine. But when I am in debug mode, for clientA, everything works but when I choose clientB, everything works except one part where I have a gridview followed a lot of Ajax toolkits. When I set a breakpoint in any of the items in that gridview, if it is gridview_rowdatabound, DropDownList_SelectedChangedEvent, I get the same error:
Microsoft JScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: 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 ori ...
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