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[Critical] GetXamlTypeByName(string typeName) fails for typename Windows.UI.Xaml.Controls.RevealBackgroundBrush

See original GitHub issue

Describe the bug

TypeName: “Windows.UI.Xaml.Controls.RevealBackgroundBrush”

Demo project is in here: App1.zip

Steps to reproduce the bug

Steps to reproduce the behavior:

Install Microsoft.UI.Xaml 2.5.0
Override OnWindowCreated(WindowCreatedEventArgs args) in App.cs
Set a break point on it
Set break on FileNotFoundException
Make sure you use any Controls from Microsoft.UI.Xaml
Run demo app in X64 Debug mode
Wait until VS hit the break point on “OnWindowCreated”
Wait for a few seconds
Press F5 to continue
Got the exception.

 	System.Private.CoreLib.dll!System.Runtime.Loader.AssemblyLoadContext.ResolveUsingEvent(System.Reflection.AssemblyName assemblyName)	Unknown
 	System.Private.CoreLib.dll!System.Runtime.Loader.AssemblyLoadContext.ResolveUsingResolvingEvent(System.IntPtr gchManagedAssemblyLoadContext, System.Reflection.AssemblyName assemblyName)	Unknown
 	[Native to managed conversion]	
 	[Managed to native  conversion]	
 	System.Private.CoreLib.dll!System.RuntimeTypeHandle.GetTypeByName(string name, bool throwOnError, bool ignoreCase, bool reflectionOnly, ref System.Threading.StackCrawlMark stackMark, System.IntPtr pPrivHostBinder, bool loadTypeFromPartialName)	Unknown
 	System.Private.CoreLib.dll!System.RuntimeType.GetType(string typeName, bool throwOnError, bool ignoreCase, bool reflectionOnly, ref System.Threading.StackCrawlMark stackMark)	Unknown
 	System.Private.CoreLib.dll!System.Type.GetType(string typeName)	Unknown
 	Microsoft.UI.Xaml.Markup.winmd!Microsoft.UI.Xaml.Markup.ReflectionXamlMetadataProvider.GetNonGenericType(string compilerTypeName = "Windows.UI.Xaml.Controls.RevealBackgroundBrush")	Unknown
 	Microsoft.UI.Xaml.Markup.winmd!Microsoft.UI.Xaml.Markup.ReflectionXamlMetadataProvider.CreateXamlType(string typeName)	Unknown
 	Microsoft.UI.Xaml.Markup.winmd!Microsoft.UI.Xaml.Markup.ReflectionXamlMetadataProvider.getXamlType(string typeName)	Unknown
>	App1.exe!App1.App1_XamlTypeInfo.XamlTypeInfoProvider.GetXamlTypeByName(string typeName = "Windows.UI.Xaml.Controls.RevealBackgroundBrush") Line 136	C#
 	App1.exe!App1.App1_XamlTypeInfo.XamlMetaDataProvider.GetXamlType(string fullName = "Windows.UI.Xaml.Controls.RevealBackgroundBrush") Line 100	C#
 	App1.exe!App1.App.GetXamlType(string fullName = "Windows.UI.Xaml.Controls.RevealBackgroundBrush") Line 49	C#

Expected behavior

Should not throw any exception. It might throw a lot of FileNotFoundException which cause my app stop responding for about 20 seconds on startup

Version Info

NuGet package version: [Microsoft.UI.Xaml 2.5.0] [Microsoft.UI.Xaml 2.6.0-latestprelease]

Windows app type:

UWP	Win32
Yes

Windows 10 version	Saw the problem?
Insider Build (xxxxx)
October 2020 Update (19042)	Yes
May 2020 Update (19041)
November 2019 Update (18363)
May 2019 Update (18362)
October 2018 Update (17763)
April 2018 Update (17134)
Fall Creators Update (16299)
Creators Update (15063)

Device form factor	Saw the problem?
Desktop	Yes
Xbox
Surface Hub
IoT

Additional context If we don’t set any break point on OnWindowCreated or any other function, or do not use any Controls from Microsoft.UI.Xaml. This issue will not be triggered.

Issue Analytics

State:
Created 2 years ago
Reactions:1
Comments:9 (9 by maintainers)

Top GitHub Comments

1reaction

zhuxb711commented, May 15, 2021

I think it might the same issue as https://github.com/microsoft/microsoft-ui-xaml/issues/2042

After set this to .proj file, issue gone.

<EnableTypeInfoReflection>false</EnableTypeInfoReflection>

0reactions

zhuxb711commented, May 17, 2021

I could not repro this in another computer. Might be related to environment

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