Bug 22547 - [WP] 'System.InvalidCastException': Unable to cast object of type 'Xamarin.Forms.TemplatedItemsList`2[Xamarin.Forms.ItemsView`1[Xamarin.Forms.Cell],Xamarin.Forms.Cell]' to type 'Xamarin.Forms.Cell'.
Summary: [WP] 'System.InvalidCastException': Unable to cast object of type 'Xamarin.Fo...
Alias: None
Product: Forms
Classification: Xamarin
Component: Forms ()
Version: 1.2.2
Hardware: PC Mac OS
: Normal normal
Target Milestone: ---
Assignee: Bugzilla
Depends on:
Reported: 2014-09-01 12:08 UTC by Prashant Cholachagudda
Modified: 2015-05-05 06:37 UTC (History)
8 users (show)

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

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Description Prashant Cholachagudda 2014-09-01 12:08:03 UTC
When using a ViewCell instead of a TextCell, the TiltEffect is missing on WP8. 

The customer added a custom ItemTemplate in the app.xaml of the WP8 project and created a custom ListViewRenderer. 
The listview renderer replaces the ItemTemplate from the PCL project with the ItemTemplate from the WP8 project. 

It is very tricky to reproduce this on the device, please use low res emulator (480x800) and tap on the very top of the ListView item (Ref: http://i.imgur.com/52haDuu.png)


Unable to cast object of type 'Xamarin.Forms.TemplatedItemsList`2[Xamarin.Forms.ItemsView`1[Xamarin.Forms.Cell],Xamarin.Forms.Cell]' to type 'Xamarin.Forms.Cell'.
at Xamarin.Forms.Platform.WinPhone.ListViewRenderer.<>c__DisplayClass18.<OnItemSelected>b__17(CellTemplateSelector i)
at System.Linq.Enumerable.FirstOrDefault[TSource](IEnumerable`1 source, Func`2 predicate)
at Xamarin.Forms.Platform.WinPhone.ListViewRenderer.OnItemSelected(Object sender, SelectedItemChangedEventArgs args)
at Xamarin.Forms.ListView.OnSelectedItemChanged(BindableObject bindable, Object oldValue, Object newValue)
at Xamarin.Forms.BindableObject.SetValueActual(BindableProperty property, Object value, Boolean currentlyApplying, Boolean clearBindings, Boolean raiseOnEqual)
at Xamarin.Forms.BindableObject.SetValueCore(BindableProperty property, Object value, Boolean clearBindings, Boolean raiseOnEqual, Boolean checkaccess)
at Xamarin.Forms.ListView.NotifyRowTapped(Int32 groupIndex, Int32 inGroupIndex)
at Xamarin.Forms.Platform.WinPhone.ListViewRenderer.OnTapListBox(Object sender, GestureEventArgs gestureEventArgs)
at MS.Internal.CoreInvokeHandler.InvokeEventHandler(Int32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
at MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName)
Comment 3 Erik Renaud 2015-04-23 23:01:27 UTC
I get the same bug on WP when i add a 2nd item to a databinded listview

it started happening with XF 1.4.2
Comment 4 Ram Chandra 2015-05-05 06:37:11 UTC
I have checked this issue with attached project and I am able to reproduce this issue with Xamarin.Forms: 

Screencast: http://www.screencast.com/t/Ly1PJoni5p6 

After updating xamarin.Forms package to Xamarin.Forms: I am not getting the reported behavior.

Screencast: http://www.screencast.com/t/WgpmCiWTw

Could you please update xamarin.Forms package to "" and check it again if this issue is still exits feel free to reopen it.

Environment Info:

Microsoft Visual Studio Professional 2013
Version 12.0.30723.00 Update 3
Microsoft .NET Framework
Version 4.5.51641

Installed Version: Professional

LightSwitch for Visual Studio 2013   06177-004-0447006-02641
Microsoft LightSwitch for Visual Studio 2013

Team Explorer for Visual Studio 2013   06177-004-0447006-02641
Microsoft Team Explorer for Visual Studio 2013

Visual Basic 2013   06177-004-0447006-02641
Microsoft Visual Basic 2013

Visual C# 2013   06177-004-0447006-02641
Microsoft Visual C# 2013

Visual C++ 2013   06177-004-0447006-02641
Microsoft Visual C++ 2013

Visual F# 2013   06177-004-0447006-02641
Microsoft Visual F# 2013

Visual Studio 2013 Code Analysis Spell Checker   06177-004-0447006-02641
Microsoft® Visual Studio® 2013 Code Analysis Spell Checker

Portions of International CorrectSpell™ spelling correction system © 1993 by Lernout & Hauspie Speech Products N.V. All rights reserved.

The American Heritage® Dictionary of the English Language, Third Edition Copyright © 1992 Houghton Mifflin Company. Electronic version licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

Windows Phone SDK 8.0 - ENU   06177-004-0447006-02641
Windows Phone SDK 8.0 - ENU

Application Insights Tools for Visual Studio Package   1.0
Application Insights Tools for Visual Studio

ASP.NET and Web Tools   12.3.50717.0
Microsoft Web Developer Tools contains the following components:
Support for creating and opening ASP.NET web projects
Browser Link: A communication channel between Visual Studio and browsers
Editor extensions for HTML, CSS, and JavaScript
Page Inspector: Inspection tool for ASP.NET web projects
Scaffolding: A framework for building and running code generators
Server Explorer extensions for Microsoft Azure Websites
Web publishing: Extensions for publishing ASP.NET web projects to hosting providers, on-premises servers, or Microsoft Azure

ASP.NET Web Frameworks and Tools 2012.2   4.1.21001.0
For additional information, visit http://go.microsoft.com/fwlink/?LinkID=309563

ASP.NET Web Frameworks and Tools 2013   5.2.20703.0
For additional information, visit http://www.asp.net/

Common Azure Tools   1.2
Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.

Microsoft Advertising SDK for Windows Phone   
Microsoft Advertising SDK for Windows Phone

Microsoft Azure Mobile Services Tools   1.2
Microsoft Azure Mobile Services Tools

Multilingual App Toolkit   3.1.1250.0
Multilingual App Toolkit helps you localize your Windows Store app by providing file management, pseudo and machine translation, translation editor, and build integration. http://go.microsoft.com/fwlink?linkid=245767

NuGet Package Manager   2.8.50926.663
NuGet Package Manager in Visual Studio. For more information about NuGet, visit http://docs.nuget.org/.

Office Developer Tools for Visual Studio 2013 ENU   12.0.30626
Microsoft Office Developer Tools for Visual Studio 2013 ENU

PowerShell Tools   1.2
Provides file classification services using PowerShell

PreEmptive Analytics Visualizer   1.2
Microsoft Visual Studio extension to visualize aggregated summaries from the PreEmptive Analytics product.

SQL Server Data Tools   12.0.30919.1
Microsoft SQL Server Data Tools

Windows Phone 8.1 SDK Integration   1.0
This package integrates the tools for the Windows Phone 8.1 SDK into the menus and controls of Visual Studio.

Workflow Manager Tools 1.0   1.0
This package contains the necessary Visual Studio integration components for Workflow Manager.

Xamarin   3.11.507.0 (dfac85e)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.

Xamarin.Android (cbdf025e886eacb95ce7adf53346961156fae990)
Visual Studio plugin to enable development for Xamarin.Android.

Xamarin.Forms Intellisense   1.0
Provides intellisense for Xamarin.Forms in the XML editor.

Xamarin.iOS (7741cc495ab0baf04ff0405d0604bc27f0ecae2e)
Visual Studio extension to enable development for Xamarin.iOS.

Xamarin.iOS Unified Migration   1.0
Automated migration for Xamarin iOS Classic projects to Unified

Xamarin.TestCloud.Integration   1.0
Early preview of Xamarin Test Cloud integration