Conversion and Build Errors with .NET Framework Project in C# Dev Kit

[tuanngocfun]

Describe the bug.

I am encountering multiple issues when trying to load a traditional .NET Framework project file (CommonLanguageRuntimeLibrary.csproj) into the C# Development Kit. The project fails to load due to its unsupported format and issues with MSBuild expressions. This bug report includes detailed error messages and a description of the unsuccessful conversion attempt to the new SDK style.

Please attach log file(s) here if you have any.

The relevant logs are from the session where the errors were encountered. Projects.log

Reproduction Steps

1. Open the C# Dev Kit.
2. Attempt to load the CommonLanguageRuntimeLibrary.csproj file.
3. Observe the error messages related to unsupported project format and MSBuild issues.

Expected Behavior

The project should load successfully without errors, properly interpreting MSBuild expressions and supporting the traditional .NET Framework project format within the new SDK constraints.

Exceptions & Errors (if any)

• Error loading project due to unsupported format.
• MSBuild expression format errors.
• Repeated import errors for Microsoft.CSharp.targets.

.NET Install Tool Version

v2.0.3

Your operating system? Please provide more detail, such as the version and or distro above.

Linux

VS Code Version

1.88.1

[baronfel]

This repository is not the correct location for issues with the C# DevKit - please raise this issue over at microsoft/vscode-dotnettools.