First you need an Horizontal ListView that is bounded to list of objects, when the object contains path to image, and summary.
you can get direction from here:
wpf-bind-images-horizontally-to-listview
Whenever you click the upload button all you have to do is just to add a new object with the selected path to the bounded list.
about the two arrow buttons - you have to see how to change the listview horizontal scrollbar control template.
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