SwapChainPanel.SizeChanged crashing

[Gavin-Williams]

If I subscribe to SwapChainPanel.SizeChanged with an empty method, it resizes. But if i have a line of code in there with a breakpoint the app crashes. Am I not understanding something here?

This will run and resize ..

 private void SwapChainPanel_SizeChanged(object sender, Windows.UI.Xaml.SizeChangedEventArgs e)
 {
     //HostSize = new IntSize((int)e.NewSize.Width, (int)e.NewSize.Height);
 }

This will crash ..

 private void SwapChainPanel_SizeChanged(object sender, Windows.UI.Xaml.SizeChangedEventArgs e)
 {
     HostSize = new IntSize((int)e.NewSize.Width, (int)e.NewSize.Height); ** BREAKPOINT SET **
 }

Output ..

onecoreuap\windows\wgi\winrt\display\displaycommon.cpp(411)\Windows.Graphics.dll!513C44D2: (caller: 513C4327) ReturnHr(1) tid(5688) 80070490 Element not found. onecoreuap\windows\wgi\winrt\display\displaycommon.cpp(411)\Windows.Graphics.dll!513C44D2: (caller: 513C4327) ReturnHr(2) tid(5688) 80070490 Element not found. Exception thrown at 0x76BB4192 in DemoLoadingData.exe: Microsoft C++ exception: EEFileLoadException at memory location 0x0947CDBC. Exception thrown at 0x76BB4192 in DemoLoadingData.exe: Microsoft C++ exception: [rethrow] at memory location 0x00000000. Exception thrown at 0x76BB4192 in DemoLoadingData.exe: Microsoft C++ exception: [rethrow] at memory location 0x00000000. Exception thrown at 0x76BB4192 in DemoLoadingData.exe: Microsoft C++ exception: [rethrow] at memory location 0x00000000. Exception thrown at 0x76BB4192 (KernelBase.dll) in DemoLoadingData.exe: WinRT originate error - 0x80131040 : 'System.IO.FileLoadException: Could not load file or assembly 'System.Runtime.WindowsRuntime, Version=4.0.15.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) at Engines.Engine2.SwapChainPanel_SizeChanged(Object sender, SizeChangedEventArgs e)'. The program '[5180] DemoLoadingData.exe' has exited with code 0 (0x0).

[AaronRobinsonMSFT]

@Gavin-Williams Sorry for the very late reply here. Our plans for WinRT have substantially changed in .NET 5.0. The future of WinRT support is described in #35318.

With respect to the specific issue here it appears that the System.Runtime.WindowsRuntime version that is deployed with the application is incorrect. @jkoritzinsky do you have any thoughts on why that might be?

[Gavin-Williams]

@AaronRobinsonMSFT Hi, I'm not experiencing this issue now. I think this was due to, as you say, I was using the wrong 'package'.

I brought up the issue with packages here .. #34309 where you commented last week.

So If I understand the issue correctly in retrospect, this issue and that issue about the similar package names document the path I had to take over a week or so working out what was wrong. But this definitely had me in a fever for a bit there, because I couldn't see what the issue was.

Thanks for following up. I will close this issue, as it was probably a case of incorrect package.