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Why does the ScrollViewer default to HorizontalScrollBarVisibility Disabled and VerticalScrollBarVisibility Visible?

April 26, 2017Default disabled scrollviewer visible

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Why does the ScrollViewer default to HorizontalScrollBarVisibility Disabled and VerticalScrollBarVisibility Visible?

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For compatibility with the WPF defaults, of course. 🙂 Regarding the obvious next question about why those values are the WPF defaults, I don’t know. Auto/Auto would seem more generally useful to me and, in fact, the WPF ListBox (and Silverlight ListBox) overrides the ScrollViewer defaults to set Auto/Auto! But maintaining compatibility wins, so the Silverlight ScrollViewer defaults to the same values used by WPF.