Bug 34832 - ListView bugs in Windows Phone when Moving items
Summary: ListView bugs in Windows Phone when Moving items
Status: RESOLVED NOT_ON_ROADMAP
Alias: None
Product: Forms
Classification: Xamarin
Component: Windows ()
Version: 1.5.0
Hardware: PC Windows
: Normal normal
Target Milestone: ---
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2015-10-13 14:20 UTC by Alvaro Rivoir
Modified: 2017-02-23 15:14 UTC (History)
3 users (show)

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


Attachments
Visual Studio solution (263.88 KB, application/x-zip-compressed)
2015-10-13 14:20 UTC, Alvaro Rivoir
Details


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Status:
RESOLVED NOT_ON_ROADMAP

Description Alvaro Rivoir 2015-10-13 14:20:42 UTC
Created attachment 13315 [details]
Visual Studio solution

When binding a ListView to an ObservableCollection and the items are moved using Move method(see link below) there are various bugs.

https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=EN-US&k=k(System.Collections.ObjectModel.ObservableCollection%601.Move);k(TargetFrameworkMoniker-.NETPortable,Version%3Dv4.5);k(DevLang-csharp)&rd=true


1)The whole list is refreshed, and it's very slow. (The same in Android works fine)
2)The scroll position is lost (The same in Android works fine)
3)An exception is raised after moving the items various times "System.AccessViolationException was unhandled
Message: An unhandled exception of type 'System.AccessViolationException' occurred in System.Windows.ni.dll
Additional information: Attempted to read or write protected memory. This is often an indication that other memory is corrupt."
4)Layout cycle if no RowHeight is specified.

In order to reproduce 1) press the up/down buttons in the right of the list. In order to reproduce 2)scroll down and press any of the up/down buttons. In order to reproduce 3) do the same as 1 multiple times. In order to reproduce 4 remove the following lines in Main.xaml <ListView.RowHeight><OnPlatform x:TypeArguments="x:Int32" iOS="-1" Android="-1" WinPhone="70"/></ListView.RowHeight>
Comment 1 Thiago Grandesso 2016-09-05 18:51:28 UTC
I have the exact same issue here. The exception "System.AccessViolationException" is thrown when scrolling or moving items around a ListView and the app crashes. Any update on this?
Comment 2 Mike 2016-10-26 19:22:12 UTC
I think the 1,2 are the same as : https://bugzilla.xamarin.com/show_bug.cgi?id=41975
Comment 3 Paul DiPietro [MSFT] 2017-02-23 15:14:57 UTC
WP8 is deprecated (https://developer.xamarin.com/guides/xamarin-forms/getting-started/installation/#Windows_Phone_8_Silverlight) and as such this is being closed.