Some dotnet/runtime .sln files are being changed on solution open

Visual Studio Version: 16.8.3

Summary:

When opening some .sln files in dotnet/runtime, which are generated by slngen, some of the files are automatically edited by VS. While some of them don’t exhibit this problem.

Steps to Reproduce:

1. git clone https://github.com/dotnet/runtime.git

2. Open .\runtime\src\libraries\System.Runtime.Serialization.Formatters\System.Runtime.Serialization.Formatters.sln

3. Look at the Git Changes window:

Expected Behavior: I haven’t made any changes, so the Git Changes window should not show any changes.

Actual Behavior:

User Impact:

Users have to constantly “fight” with VS and ensure they don’t check these changes in.

Notes:

Solution files that cause the problem under .\runtime\src\libraries\:

• System.Data.Common
• System.ObjectModel
• System.Runtime.Serialization.Formatters

Solution files that don’t cause the problem:

• System.Console
• System.ObjectModel
• System.Text.RegularExpressions

cc @ViktorHofer

[jeffkl]

VS is updating it on load.

Whoops I misunderstood.

Yes it looks like Platform/Configuration is sorted and NestedProjects is in a different location. Go ahead and open an issue.

[drewnoakes]

VS uses the project type GUID to determine which project system will load the project.

As your ilproj doesn’t have an actual project system of its own and is piggy-backing off the C# one, I’d keep the old GUID (9A19103F-16F7-4668-BE54-9A1E7A4F7556) for now.