ResourceNameToResourceString converter does not find the resource altough it exists.

[Suriman]

Describe the bug

Using the converter to obtain a named resource provokes a NullReferenceException.

Regression

No response

Reproducible in sample app?

• This bug can be reproduced in the sample app.

Steps to reproduce

Launch the attached solution, a NullReferenceException should be thrown after MainPage.InitializeComponent() is executed. If the xaml with the Converter is commented it does not throw.

The resource is defined in Strings/en/Resources.resw and the same resource name is in a property of the code-behind of MainPage.xaml and x:binded to the Text property of the TextBlock.

Expected behavior

No error should be produced and the string resource should be set to the TextBlock.

Screenshots

No response

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 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)
• Other (specify)

Other SDK version

No response

Visual Studio Version

2022

Visual Studio Build Number

Version 17.3.0 Preview 2.0

Device form factor

Desktop

Nuget packages

Microsoft.WindowsAppSDK 1.1.0
CommunityToolkit.WinUI.UI 7.1.2

Additional context

ResourceNameToResourceStringConverterIssueWinUI.zip

Help us help you

No.

Hello Suriman, thank you for opening an issue with us!

I have automatically added a "needs triage" label to help get things started. Our team will analyze and investigate the issue, and escalate it to the relevant team if possible. Other community members may also look into the issue and provide feedback 🙌

[Arlodotexe]

I've verified that the bug is there in the provided solution, and I've triaged this so we can begin work on it.

Additional information for the person who fixes this, this is the place where the nullref happens:

[michael-hawker]

May be related? microsoft/WindowsAppSDK#1674