Add an option to always show ErrorTemplate text #4467
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…late, regardless of focus or mouse over.
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Describe the changes you have made to improve this project
Original change from #4451 added by @nekizalb
Add an option to always show ErrorTemplate text, regardless of focus or mouse over.
This change introduces a new attached property in ValidationHelper to enable the behavior and a new style trigger that will enable when the template has errors and the new attached property, ValidationHelper.AlwaysShowValidationError, is set to true for the element.
Unit test
Additional context
Closed Issues
Closes #4451