If C# Dev Kit is not installed, programmatically calling command dotnet.generateAssets does not work #8389
Description
Type: Bug
Issue Description
If C# Dev Kit is not installed, programmatically calling command dotnet.generateAssets does not work. The Container Tools extension uses this command and the tasks it generates to debug .NET apps within a container.
Steps to Reproduce
- Install C# and Container Tools extensions, but do not install C# Dev Kit.
- Create and open a .NET MVC project.
- In the command palette, run the command "Containers: Add Docker files to workspace...". Follow the prompts to scaffold Docker files for .NET: ASP.NET Core.
- (Behind the scenes, during the above step, the Container Tools extension will call
dotnet.generateAssets, but nothing happens.) - Try running the debug profile "Containers: .NET Launch"
Expected Behavior
Debugging works
Actual Behavior
Debugging starts, but fails because the app is not built
I suspect the root cause of the issue is that this line is returning false instead of true:
When promptForDevKitDebugConfigurations gets called, without C# Dev Kit installed, that function will always return false. Above on this line, it will cause the function for dotnet.generateAssets to immediately return:
vscode-csharp/src/lsptoolshost/debugger/debugger.ts
Lines 57 to 59 in ff6e65a
Logs
Nothing noteworthy
C# log
C# LSP Trace Logs
Environment information
VSCode version: 1.101.2
C# Extension: 2.80.16
Using OmniSharp: false
Dotnet Information
.NET SDK: Version: 10.0.100-preview.5.25277.114 Commit: ddf39a1b46 Workload version: 10.0.100-manifests.a07d1f1a MSBuild version: 17.15.0-preview-25277-114+ddf39a1b4Runtime Environment:
OS Name: Windows
OS Version: 10.0.26100
OS Platform: Windows
RID: win-x64
Base Path: C:\Program Files\dotnet\sdk\10.0.100-preview.5.25277.114\
.NET workloads installed:
[aspire]
Installation Source: VS 17.14.36221.1
Manifest Version: 8.2.2/8.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.aspire\8.2.2\WorkloadManifest.json
Install Type: Msi
Configured to use workload sets when installing new manifests.
Workloads are configured to install and update using workload versions, but none were found. Run "dotnet workload restore" to install a workload version.
Host:
Version: 10.0.0-preview.5.25277.114
Architecture: x64
Commit: ddf39a1b46
.NET SDKs installed:
9.0.301 [C:\Program Files\dotnet\sdk]
10.0.100-preview.5.25277.114 [C:\Program Files\dotnet\sdk]
.NET runtimes installed:
Microsoft.AspNetCore.App 8.0.17 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 9.0.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 10.0.0-preview.5.25277.114 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 8.0.17 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 9.0.6 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 10.0.0-preview.5.25277.114 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 8.0.17 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 9.0.6 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 10.0.0-preview.5.25277.114 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Other architectures found:
x86 [C:\Program Files (x86)\dotnet]
registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]
Environment variables:
Not set
global.json file:
Not found
Learn more:
https://aka.ms/dotnet/info
Download .NET:
https://aka.ms/dotnet/download
Visual Studio Code Extensions
| Extension | Author | Version | Folder Name |
|---|---|---|---|
| azure-dev | ms-azuretools | 0.9.0 | ms-azuretools.azure-dev-0.9.0 |
| codespaces | GitHub | 1.17.3 | github.codespaces-1.17.3 |
| copilot | GitHub | 1.338.0 | github.copilot-1.338.0 |
| copilot-chat | GitHub | 0.28.3 | github.copilot-chat-0.28.3 |
| csharp | ms-dotnettools | 2.80.16 | ms-dotnettools.csharp-2.80.16-win32-x64 |
| debugpy | ms-python | 2025.8.0 | ms-python.debugpy-2025.8.0-win32-x64 |
| docker | docker | 0.11.0 | docker.docker-0.11.0-win32-x64 |
| esbuild-problem-matchers | connor4312 | 0.0.3 | connor4312.esbuild-problem-matchers-0.0.3 |
| extension-test-runner | ms-vscode | 0.0.12 | ms-vscode.extension-test-runner-0.0.12 |
| memento-explorer | bwater | 0.1.5 | bwater.memento-explorer-0.1.5 |
| python | ms-python | 2025.8.0 | ms-python.python-2025.8.0-win32-x64 |
| remote-containers | ms-vscode-remote | 0.417.0 | ms-vscode-remote.remote-containers-0.417.0 |
| remote-explorer | ms-vscode | 0.5.0 | ms-vscode.remote-explorer-0.5.0 |
| remote-repositories | ms-vscode | 0.42.0 | ms-vscode.remote-repositories-0.42.0 |
| remote-server | ms-vscode | 1.5.2 | ms-vscode.remote-server-1.5.2 |
| remote-ssh | ms-vscode-remote | 0.120.0 | ms-vscode-remote.remote-ssh-0.120.0 |
| remote-ssh-edit | ms-vscode-remote | 0.87.0 | ms-vscode-remote.remote-ssh-edit-0.87.0 |
| remote-wsl | ms-vscode-remote | 0.99.0 | ms-vscode-remote.remote-wsl-0.99.0 |
| tsl-problem-matcher | amodio | 0.6.2 | amodio.tsl-problem-matcher-0.6.2 |
| vscode-azureresourcegroups | ms-azuretools | 0.10.13 | ms-azuretools.vscode-azureresourcegroups-0.10.13 |
| vscode-containers | ms-azuretools | 2.0.4-alpha | vscode-containers |
| vscode-dotnet-runtime | ms-dotnettools | 2.3.6 | ms-dotnettools.vscode-dotnet-runtime-2.3.6 |
| vscode-eslint | dbaeumer | 3.0.10 | dbaeumer.vscode-eslint-3.0.10 |
| vscode-pylance | ms-python | 2025.6.2 | ms-python.vscode-pylance-2025.6.2 |
| vscode-remote-extensionpack | ms-vscode-remote | 0.26.0 | ms-vscode-remote.vscode-remote-extensionpack-0.26.0 |
| vscode-yaml | redhat | 1.18.0 | redhat.vscode-yaml-1.18.0 |
Extension version: 2.80.16
VS Code version: Code 1.101.2 (2901c5ac6db8a986a5666c3af51ff804d05af0d4, 2025-06-24T20:27:15.391Z)
OS version: Windows_NT x64 10.0.26100
Modes:
System Info
| Item | Value |
|---|---|
| CPUs | Intel(R) Core(TM) i9-10900K CPU @ 3.70GHz (20 x 3696) |
| GPU Status | 2d_canvas: enabled canvas_oop_rasterization: enabled_on direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off |
| Load (avg) | undefined |
| Memory (System) | 126.84GB (93.30GB free) |
| Process Argv | --folder-uri file:///d%3A/vscode-containers --log ms-azuretools.vscode-containers=debug --crash-reporter-id c08aabd7-db54-41cf-8677-dacd1ad47381 |
| Screen Reader | no |
| VM | 0% |
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