Application goes to "No symbol loaded" mode and pops up an exception when stop running application

[Cassie-Li01]

Description

System.TypeLoadException
HResult=0x80131522
Message=Could not load type 'System.Runtime.InteropServices.Marshalling.AnsiStringMarshaller' from assembly 'Microsoft.Win32.SystemEvents, Version=7.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' due to value type mismatch.
Source=Microsoft.Win32.SystemEvents
StackTrace:
at Interop.Kernel32.GetProcAddress(IntPtr hModule, String lpProcName)
at Microsoft.Win32.SystemEvents.get_DefWndProc()
at Microsoft.Win32.SystemEvents.Dispose()
at Microsoft.Win32.SystemEvents.WindowThreadProc()

Reproduction Steps

1. Create a .Net 7.0 application (.NET version is .NET 7.0.100-rc.1.22364.25)
2. Run the application and stop it

Expected behavior

Stop application normally

Actual behavior

Application goes to "No symbol loaded" mode and pops up an exception

Regression?

Yes, it is a regression issue, cannot repro in .Net 7.0.100-preview.7.22357.5

Known Workarounds

No response

Configuration

No response

Other information

No response

[ghost]

Tagging subscribers to this area: @dotnet/area-microsoft-win32
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Issue Details

---

Description

System.TypeLoadException
HResult=0x80131522
Message=Could not load type 'System.Runtime.InteropServices.Marshalling.AnsiStringMarshaller' from assembly 'Microsoft.Win32.SystemEvents, Version=7.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' due to value type mismatch.
Source=Microsoft.Win32.SystemEvents
StackTrace:
at Interop.Kernel32.GetProcAddress(IntPtr hModule, String lpProcName)
at Microsoft.Win32.SystemEvents.get_DefWndProc()
at Microsoft.Win32.SystemEvents.Dispose()
at Microsoft.Win32.SystemEvents.WindowThreadProc()

Reproduction Steps

1. Create a .Net 7.0 application (.NET version is .NET 7.0.100-rc.1.22364.25)
2. Run the application and stop it

Expected behavior

Stop application normally

Actual behavior

Application goes to "No symbol loaded" mode and pops up an exception

Regression?

Yes, it is a regression issue, cannot repro in .Net 7.0.100-preview.7.22357.5

Known Workarounds

No response

Configuration

No response

Other information

No response

Author:	Cassie-Li01
Assignees:	-
Labels:	area-Microsoft.Win32
Milestone:	-

[danmoseley]

Moving to interop as nothing changed here.

[AaronRobinsonMSFT]

This is because of the breaking change in the marshaller shapes introduced between Preview 7 and RC1. The solution is to stay within the same version of the SDK and implementation. If using RC1, then RC1 of WinForms should be used - mixing Preview 7 and RC1 will result in the above issues.

@jkoritzinsky or @elinor-fung may have another mitigation but this is a known break.

See #70859 for the API changes.

[AaronRobinsonMSFT]

Closing this as it will be sorted once WindowsDesktop moves onto RC1.

[Cassie-Li01]

This issue is fixed on .NET latest 7.0.100-rc.1.22368.21 version from main branch. Screenshot as below: