Comments by George Tryfonas (Top 5 by date)

It may be a stupid thing to ask, but did you rename the element when you changed the control from ListBox to ElementFlow? If you did, did you make sure to update your binding?

John, thanks for your complete and excellent answer. I'll find my way from here. George.

John, thanks, these are good suggestions. However, there is one key fact that I forgot to mention: this array may contain tens of thousands up to millions of elements. However, few of them change at a time. Unfortunately, if I create a worker thread that moves items from the array to an observable collection, it will take quite some time until it's done moving them -- which means that refreshing the UI will be quite slow. On the other hand, you suggest that I create a thread that "watches" the array. By that I understand that you mean that the thread can determine which elements of the array have changed. Could you please elaborate a bit more? If I could do that then I could wrap the array around a custom collection class and send the approriate collection change notifications (i.e. the Replace action). If there are no better suggestions than the ones you have given I will have to accept your answer as the best one. Thanks for the effort anyway.