This is Xamarin's bug tracking system. For product support, please use the support links listed in your Xamarin Account.
Bug 53224 - CanExecute not used in ViewCells in UWP
Summary: CanExecute not used in ViewCells in UWP
Status: VERIFIED FIXED
Alias: None
Product: Forms
Classification: Xamarin
Component: Forms (show other bugs)
Version: 2.3.3
Hardware: PC Windows
: --- normal
Target Milestone: ---
Assignee: Chris King
URL:
Depends on:
Blocks:
 
Reported: 2017-03-10 16:06 UTC by EB
Modified: 2017-07-13 06:58 UTC (History)
6 users (show)

See Also:
Tags: tableview ac
Is this bug a regression?: ---
Last known good build:


Attachments
Small reproduction of the bug. (295.69 KB, application/x-zip-compressed)
2017-03-10 16:06 UTC, EB
Details

Description EB 2017-03-10 16:06:42 UTC
Created attachment 20271 [details]
Small reproduction of the bug.

In TableViews in UWP, Viewcells don't use the CanExecute event. I have a bigger project which invokes the event in a TextCell and ImageCell, but I've created a small reproduction to show the bug (no event invoked, just a hard-coded function that returns false). I have confirmed that the bug does not exist in Android and iOS, at least on my bigger project and in the reproduction. Tested in both Forms 2.3.3.193 and 2.3.4.212-pre4

I will admit to not testing this with any other controls that have a Command Binding such as buttons, or ViewCells in a ListView, and I have not tested earlier releases of Xamarin Forms. I have also not looked into a work-a-round using a custom renderer. If I get some time to work on this though, I will update this thread.

Hopefully my attachment works, it's my first time submitting a bug report.
Comment 1 Paul DiPietro [MSFT] 2017-03-10 17:46:55 UTC
Thanks for the reproduction; there is a noted difference in behavior between UWP and the other platforms, and I also checked against the latest nightly build to be sure.
Comment 3 Rui Marinho 2017-03-15 10:15:26 UTC
Should be fixed on 2.3.5-pre1
Comment 4 Saurabh Paunikar 2017-07-13 06:58:55 UTC
Verified on xamarin.form version 2.3.5.256-pre6

ScreenCast Link: https://www.screencast.com/t/g59IwTCn

Note You need to log in before you can comment on or make changes to this bug.