CommunityToolkit.WinUI.UI.FrameworkElementExtensions.FindChild throw System.InvalidCastException with CollectionView

[megamechanic]

Describe the bug

CommunityToolkit.WinUI.UI.FrameworkElementExtensions.FindChild throw System.InvalidCastException when a view contains CollectionView

Steps to reproduce

create a view with ListView
create CollectionView with CollectionView.Source = IEnumerable<T> where T is interface;
ListView.ItemsSource bind to CollectionView.View
try to find any FrameworkElement on the view

Expected behavior

FindChild must return found element or null if view doesn't contain it.

Screenshots

No response

Code Platform

• UWP
• WinAppSDK / WinUI 3
• Web Assembly (WASM)
• Android
• iOS
• MacOS
• Linux / GTK

Windows Build Number

• Windows 10 1809 (Build 17763)
• Windows 10 1903 (Build 18362)
• Windows 10 1909 (Build 18363)
• Windows 10 2004 (Build 19041)
• Windows 10 20H2 (Build 19042)
• Windows 10 21H1 (Build 19043)
• Windows 10 21H2 (Build 19044)
• Windows 10 22H2 (Build 19045)
• Windows 11 21H2 (Build 22000)
• Other (specify)

Other Windows Build number

No response

App minimum and target SDK version

• Windows 10, version 1809 (Build 17763)
• Windows 10, version 1903 (Build 18362)
• Windows 10, version 1909 (Build 18363)
• Windows 10, version 2004 (Build 19041)
• Windows 10, version 2104 (Build 20348)
• Windows 11, version 22H2 (Build 22000)
• Other (specify)

Other SDK version

No response

Visual Studio Version

No response

Visual Studio Build Number

No response

Device form factor

No response

Additional context

Test example
CollectionViewTest

Help us help you

Yes, I'd like to be assigned to work on this item.

Tasks

Beta Give feedback

No tasks being tracked yet.