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I have a DataBoundListBox bound to an instance of an IncrementalLoadingCollection. I'd like to display a progress ring during the async fetch operation (the LoadMoreItemsAsync call) both during the initial load and during a refresh operation. I know I can use the EmptyTemplate/EmptyContent properties to achieve this (since that's what one of the samples does) but it seems like that would prevent me from using those properties when the content really is empty.
What's the right way to know that data is being loaded to display a progress indicator to the user?
What's the right way to know that data is being loaded to display a progress indicator to the user?