“无法找到任何已安装的 .NET Core SDK”在运行 dotnet --info 时显示。当我运行dotnet --list-sdks时，它什么也没显示

问：

我尝试使用Net的设置删除，重新安装和修复文件。

当我运行命令时，它显示为我没有安装任何 sdk。尝试运行，但都显示相同，什么都没有。在这里，我有一个来自cmd的图像。 命令显示的错误。dotnet --list-sdksdotnet --versiondotnet --info

我将保留命令及其输出，以便您可以更好地看到它们。

C:\Users\User>dotnet --list-sdks

C:\Users\User>dotnet --version
  It was not possible to find any installed .NET Core SDKs
  Did you mean to run .NET Core SDK commands? Install a .NET Core SDK from:
      https://aka.ms/dotnet-download

C:\Users\User>dotnet --info
  It was not possible to find any installed .NET Core SDKs
  Did you mean to run .NET Core SDK commands? Install a .NET Core SDK from:
      https://aka.ms/dotnet-download

Host (useful for support):
  Version: 3.1.16
  Commit:  4c6b4aa257

.NET Core SDKs installed:
  No SDKs were found.

.NET Core runtimes installed:
  Microsoft.AspNetCore.App 6.0.23 [C:\Program Files (x86)\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 3.1.16 [C:\Program Files (x86)\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 6.0.23 [C:\Program Files (x86)\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.WindowsDesktop.App 3.1.16 [C:\Program Files (x86)\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 6.0.23 [C:\Program Files (x86)\dotnet\shared\Microsoft.WindowsDesktop.App]

To install additional .NET Core runtimes or SDKs:
  https://aka.ms/dotnet-download

如果你能帮助我，我将不胜感激。

我尝试使用Net的设置删除，重新安装和修复文件。