IListDataAdapter called in infinite loop by WinJS

Question

I have a custom IListDataAdapter which sporadically works or doesn't. The adapter loads data from a web service incrementally as the WinJS ListView requests it (always load a few dozen extra items so that there's no service call each time). 

Everything works nicely until I begin scrolling the ListView. More often than not, the getItemsForIndex function is called repeatedly as if it doesn't accept the returned value. I've replicated this issue whether I scroll slowly and let each web service call complete before scrolling or whether I scroll wildly. The one definining characteristic of this call is that it requests all items from index 0 until the latest items it has loaded. It is as if it is attempting a refresh of some sort.

Been dealing with this for a few days now. I checked my keys over and over and they are correct. What could be the cause of this?

Thanks!

Answer 1

Hi,

If possible, please upload a demo to skydrive.

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