In order to enable scrolling logic you need to set Width
of the control. The ScrollViewer enables content to be displayed in a smaller area than its actual size. If you don't restrict the size of the panelbar, it will get all the needed space to show its content.
I hope this time we are on the same page. If not and I misunderstand your question, please provide us a sample project and detailed information about your requirements and expected behavior. This will allow us to examine your implementation so that we could suggest a suitable approach.
I'm looking forward to your reply.
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