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• Clientside callback returns nothing

  I am trying to implement a web form that uses the 2.0 client-side callback mechanism to render certain sections of the page individually. My problem is that the callbacks don't seem to work inside an iframe. The client callbacks behave fine when I request the page outside of the frame, but they don't seem to work once the page is rendered inside the frame. Even weirder, if I debug the page while it is requested inside the iframe and make a callback, my debugger cranks up and goes through the callback

  Posted to Client Side Web Development (Forum) by garrettrs on 7/28/2006

• Re: Cleint callback javascript error and Postback error ..

  I had the same error when I first started using client callbacks (__pendingCallbacks[..] async is null...). The solution to my problem was getting rid of all the local variables 'i' in javascript on the client side. Turns out, that the WebResource.axd file generated by aspnet to handle posting callbacks has a global variable 'i', which is used to iterate through pending callback requests in the WebForm_CallbackComplete method. If you declare a loop outside the file in your own code like this for

  Posted to Web Forms (Forum) by garrettrs on 7/28/2006