Prevent AutoCompleteBox getting stuck in a state where it can't drop down. #17074
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Wrap everything in a `try`...`finally` block so that they get reset even on exception.
grokys
added
bug
priority
backport-candidate-11.1.x
MrJul
approved these changes
Sep 20, 2024
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You can test this PR using the following package version. |
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What does the pull request do?
AutoCompleteBoxsometimes can get stuck in a state where it can't get dropped down. A customer reported this, giving the use case where they setIsDropDownOpen(via a binding) before they setItemsSource(also via a binding).This happens because
AutoCompleteBox.RefeshViewhas two state flags:_filterInActionand_cancelRequested. Usually these are reset when the method exits but in the case where there are no items, the method exits early leaving_filterInActionset to true.Wrap the whole thing in a
try...finallyblock to make sure the flags are always reset when the method exits, even if there are exceptions etc.Note: the diff is best viewed using the
Hide whitespaceoption on GitHub as the whole block has changed indentation.