[dotnet-sdk-10.0.100-alpha.1.25057.15] Fail to open folder in WinQuickLook with error "System.InvalidCastException: Unable to cast object of type 'System.__ComObject' to type 'Windows.Win32.UI.Shell.IShellView'".

[Junjun-zhao]

Description

When run the 3rd party application with the latest .NET 10 build, it was no response to open folder. After investigation, we discovered this error: System.InvalidCastException: Unable to cast object of type 'System.__ComObject' to type 'Windows.Win32.UI.Shell.IShellView'.

Reproduction Steps

App Repro Steps:

1. Open "WinQuickLookApp\WinQuickLook.App.runtimeconfig.json" file .
   2.Change the "WinQuickLook.App.runtimeconfig.json" file to let the app run against with
   dotnet-sdk-10.0.100-alpha.1.25057.15.

"frameworks": [
      {
        "name": "Microsoft.NETCore.App",
        "version": "10.0.0-alpha.1.25052.4"
      },
      {
        "name": "Microsoft.WindowsDesktop.App",
        "version": "10.0.0-alpha.1.25056.2"
      }
    ],

3. Run the ”WinQuickLook\App\WinQuickLook\WinQuickLook.App.exe”.
4. Open the folder "WinQuickLook\AdditionFiles\WinQuickLook"
5. Choose the “Test” folder.
6. Press a space-key.

Expected Result:
Pop up window.

Actual Result:
No window show.

Minimal Repro steps (Demo attached: WpfAppDemo.zip):

1. Create a default 8.0 WPF project.
2. Add the following code in WpfAppDemo.csproj.

<Platform>x64</Platform>
<RuntimeIdentifier>win-x64</RuntimeIdentifier>

3. Install package Microsoft.Windows.CsWin32 0.3.106.
4. Add the following code in Mainwindow.xaml.cs.

using System.Windows;
using Windows.Win32;
using Windows.Win32.UI.Shell;
using IServiceProvider = Windows.Win32.System.Com.IServiceProvider;
namespace WpfAppDemo
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            var shellWindows = (IShellWindows)new ShellWindows();
            shellWindows.get_Count(out var count);
            for (var i = 0; i < count; i++)
            {
                shellWindows.Item(i, out IWebBrowserApp webBrowserApp);
                webBrowserApp.get_HWND(out var hwnd);

                var serviceProvider = (IServiceProvider)webBrowserApp;

                serviceProvider.QueryService(PInvoke.SID_STopLevelBrowser, out IShellBrowser shellBrowser);

                shellBrowser.QueryActiveShellView(out var shellView);
            }
        }
    }
}

5. Copy all file from attachment to project.
6. Build the project.
7. Change the runtime.config file to let the app run against with dotnet-sdk-10.0.100-alpha.1.25057.15:

"frameworks": [
      {
        "name": "Microsoft.NETCore.App",
        "version": "10.0.0-alpha.1.25052.4"
      },
      {
        "name": "Microsoft.WindowsDesktop.App",
        "version": "10.0.0-alpha.1.25056.2"
      }
    ],

8. Launch the app.

Expected behavior

Launch successfully.

Actual behavior

Launch failed with error: System.InvalidCastException: Unable to cast object of type 'System.__ComObject' to type 'Windows.Win32.UI.Shell.IShellView'.

Regression?

Yes

Verify Scenarios:
1). Windows 10 22H2 AMD64 + dotnet-sdk-9.0.102: Pass
2). Windows 10 22H2 AMD64 + dotnet-sdk-10.0.100-alpha.1.25057.15: Fail

Known Workarounds

No response

Impact

No response

Configuration

Application Name: WinQuickLook
OS： Windows 10 22H2
CPU: X64
.NET Build Number: dotnet-sdk-10.0.100-alpha.1.25057.15
App & Source Location checking at: https://devdiv.visualstudio.com/DevDiv/_workitems/edit/2340552
Github Link: https://github.com/shibayan/WinQuickLook

Dotnet info:

.NET SDK:
 Version:           10.0.100-alpha.1.25057.15
 Commit:            39da6dde11
 Workload version:  10.0.100-manifests.a166a9cf
 MSBuild version:   17.14.0-preview-25056-07+8d395fd27

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.19045
 OS Platform: Windows
 RID:         win-x64
 Base Path:   C:\Program Files\dotnet\sdk\10.0.100-alpha.1.25057.15\

Host:
  Version:      10.0.0-alpha.1.25052.4
  Architecture: x64
  Commit:       efdd299533

.NET SDKs installed:
  10.0.100-alpha.1.25057.15 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 10.0.0-alpha.2.25056.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 10.0.0-alpha.1.25052.4 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.WindowsDesktop.App 10.0.0-alpha.1.25056.2 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other information

@dotnet-actwx-bot @dotnet/compat

[h3xds1nz]

This issue seems to be entirely CsWin32 related.

[miloush]

As in the repro case does not use WPF at all, there is no reason why this should be filed in this repo.

[Junjun-zhao]

@h3xds1nz @miloush Thanks for looking at this issue. Could you please move it to the right area if this is not WPF? Thank you

[PriyaPurkayastha]

@AArnott or @jaredpar would one of you be able to look into this issue and help move it to the right repo? Thanks.

[jaredpar]

@AaronRobinsonMSFT may have a suggestion here.

[Junjun-zhao]

Hi @AaronRobinsonMSFT, could you please have a look at this issue and let us know if any suggestions? Thanks

[AaronRobinsonMSFT]

@Junjun-zhao I'll take a look today.

[dotnet-policy-service]

Tagging subscribers to this area: @dotnet/interop-contrib
See info in area-owners.md if you want to be subscribed.

[AaronRobinsonMSFT]

@Junjun-zhao Thanks for reporting this issue. This was introduced in #105965. I will put up a fix shortly.

[Junjun-zhao]

Thanks @AaronRobinsonMSFT for the quick fix. May I know whether this is a blocker for .NET 10 Preview 1 and the fix will be merged into the .NET 10 Preview1?

[AaronRobinsonMSFT]

@Junjun-zhao Sorry, this is not a preview blocker. You should be able to get around this issue by removing the IOle interface from the definition of IShellView. I know this is being done via CsWin32 so that might be difficult, but the workaround is to not have your COM interface implement any other interface.

[Junjun-zhao]

Verified on build dotnet-sdk-10.0.100-preview.2.25122.2, this issue has been fixed.