dotnet watch run --project <PATH> Can't Work


當我的資料夾裡有兩個(或以上?) .sln 檔，即使使用 --project 指定檔案 dotnet watch run 也無法啟動。
同時有 .csproj 檔與 .sln 檔時，即使我使用' dotnet watch run --project "D:\Project\新增資料夾\EywaLink.BlazorServer\EywaLink.BlazorServer\EywaLink.BlazorServer.csproj" '也一樣不能啟動。
當我刪除 .sln 檔之後，只保留一個 .csproj 檔或 .sln 檔，' dotnet watch run '指令與' dotnet watch run --project '才可以使用，我懷疑是 --project 沒有作用。

---The following is google translate---
When there are two (or more?) .sln files in my folder, dotnet watch run cannot be started even if I use --project to specify the file.
When there are both .csproj files and .sln files, even if I use ' dotnet watch run --project "D:\Project\New Folder\EywaLink.BlazorServer\EywaLink.BlazorServer\EywaLink.BlazorServer.csproj" ' it still doesn't work.
After I delete the .sln file, only a .csproj file or a .sln file remains, and the ' dotnet watch run ' command and ' dotnet watch run --project ' can be used. I suspect that --project has no effect.