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.NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.
https://dot.net/maui
MIT License
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Global defined EventTriggers get triggered twice #24152

Open SchittkowskiMS opened 1 month ago

SchittkowskiMS commented 1 month ago

Description

When using an EventTrigger in a global defined style the invoke method gets called twice.

When using a new Style with Key and applying it that way to the control it gets only called once.

Steps to Reproduce

  1. Create new Maui-App
  2. Add TriggerAction class for some control that generates console output when invoke is called. For example for the Editor control
  3. Change the global defined style in "Resources\Styles\Styles.xaml" for the control to use the TriggerAction in an EventTrigger. For example: adding "Focused" EventTrigger.
  4. Add control to MainPage.xaml
  5. Start application on any platform and focus the control on the MainPage
  6. See console output twice

Link to public reproduction project repository

https://github.com/SchittkowskiMS/MauiEventTriggerIssue

Version with bug

8.0.80 SR8

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

Unknown/Other

Affected platforms

iOS, Android, Windows

Affected platform versions

iOS 17.5.1 Android 14 Windows 11

Did you find any workaround?

Not a good workarround but when setting this in a "named style" and then applying it to the control by key it works as expected.

Relevant log output

No response

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Zhanglirong-Winnie commented 1 month ago

This issue has been verified using Visual Studio 17.11.0 Preview 7.0(8.0.80 & 8.0.71). Can repro on Windows and Android and iOS platform.