Question

I am about to make a WPF control which presents something similar to horizontal running text. However in reality yech vertical item of the display is a complex set of text and shapes (each item is different from another and driven by its underlying object properties). Once a vertical item added to the right it does not change also most left item must be removed from the view.

Now the question (and I dont know how to quickly benchmark these alternatives) is – what is more efficient way? Do I

• keep fixed number of vertical items (related to the control width) and scroll the underlying data items (everytime new item comes from the left) ?

• keep removing most left UI vertical item and moving it to the right changing its DataContext to a new data item?

or in short – whats more efficient – rotation of UI items or data-bound underlying objects?

Please note – the app is very-low latency and I want to squeeze the most out of the solution because I need to make sure that all chances to avoid bottleneck in the UI are taken.

Answer 1

as nobody could answer I had to benchmark it. in short – UI scrolling is literally x10 times faster than data scrolling.

If SO let attach files I’d put the project files in zip here for the curious.