There is no out-of-the-box option that would allow to achieve this behaviour.
What I'd suggest is extracting and modifying the template of the GridViewScrollViewer
. In it, there is a ScrollBar control for the horizontal scrollbar and you can set its Width based on the desired remaining space. You can take a look at the template structure of the control here
and I'd also suggest going through the implicit styling
I hope this is useful.
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