.net core “为什么？”；dotnet ef迁移添加；抛出Win32Exception？

我有一个DotnetCoreV3.1项目，其中包含实体框架DbContext。 当我尝试跑步时：

dotnet ef migrations add someMigrationName

将引发此异常：

System.ComponentModel.Win32Exception (2): No such file or directory
   at System.Diagnostics.Process.ForkAndExecProcess(String filename, String[] argv, String[] envp, String cwd, Boolean redirectStdin, Boolean redirectStdout, Boolean redirectStderr, Boolean setCredentials, UInt32 userId, UInt32 groupId, UInt32[] groups, Int32& stdinFd, Int32& stdoutFd, Int32& stderrFd, Boolean usesTerminal, Boolean throwOnNoExec)
   at System.Diagnostics.Process.StartCore(ProcessStartInfo startInfo)
   at System.Diagnostics.Process.Start()
   at System.Diagnostics.Process.Start(ProcessStartInfo startInfo)
   at Microsoft.EntityFrameworkCore.Tools.Exe.Run(String executable, IReadOnlyList`1 args, String workingDirectory, Boolean interceptOutput)
   at Microsoft.EntityFrameworkCore.Tools.Project.FromFile(String file, String buildExtensionsDir, String framework, String configuration, String runtime)
   at Microsoft.EntityFrameworkCore.Tools.RootCommand.Execute(String[] _)
   at Microsoft.EntityFrameworkCore.Tools.Commands.CommandBase.<>c__DisplayClass0_0.<Configure>b__0(String[] args)
   at Microsoft.DotNet.Cli.CommandLine.CommandLineApplication.Execute(String[] args)
   at Microsoft.EntityFrameworkCore.Tools.Program.Main(String[] args)
No such file or directory

这是在我的环境中运行dotnet--info的结果：

.NET Core SDK (reflecting any global.json):
 Version:   3.1.405
 Commit:    3fae16e62e

Runtime Environment:
 OS Name:     elementary
 OS Version:  5.1.7
 OS Platform: Linux
 RID:         linux-x64
 Base Path:   /usr/share/dotnet/sdk/3.1.405/

Host (useful for support):
  Version: 3.1.11
  Commit:  f5eceb8105

.NET Core SDKs installed:
  3.1.405 [/usr/share/dotnet/sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.App 3.1.11 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 3.1.11 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

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

---

你有其他的项目解决方案吗是的，我有，但是我在我的特定项目的根目录下用dbcontext运行了这个命令。这可能会有帮助。我最近看到了这个线程，但不能理解其中的要点@YinqiuI认为您应该检查您的路径和权限。

.NET Core SDK (reflecting any global.json):
 Version:   3.1.405
 Commit:    3fae16e62e

Runtime Environment:
 OS Name:     elementary
 OS Version:  5.1.7
 OS Platform: Linux
 RID:         linux-x64
 Base Path:   /usr/share/dotnet/sdk/3.1.405/

Host (useful for support):
  Version: 3.1.11
  Commit:  f5eceb8105

.NET Core SDKs installed:
  3.1.405 [/usr/share/dotnet/sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.App 3.1.11 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 3.1.11 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

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